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4 tháng 7 2019

1.Nepalese said they had never seen such a____destroyed____earthquake.(destroy)

2.The chemical___pollution____from cars and factories make the air,water and soil dangerously dirty.(pollute)

3.The___prediction____of weather is already making farming activities difficult.(predict)

4.Human activities have released large amounts of CO2 and other ____household____gases into the atmosphere.(house)

5.The Ao dai was____traditionally____worn by both men and women.(tradition)

6.Are you____satisfied___with the new arrangement?(satisfy)

7.With rapic scientific ____development____,people will soon be able to innhabit other planets.(develop)

8.In the future,teachers will be___facilitated____rather than knowledge providers.(faciliate)

I. Fill in each blank with the correct preposition. 1. Thousands of people were exposed... radiation when the nuclear plant exploded. 2. Waste water from many factories which is dumped... water bodies directly causes water pollution. 3. Land pollution is responsible for damage done ... natural habitat of animals. 4. Americans throw... twenty-eight and a half million tons of plastic in landfills every year. 5. Scientist have come up ... new ways of saving energy. II. Circle the mistake in...
Đọc tiếp

I. Fill in each blank with the correct preposition.

1. Thousands of people were exposed... radiation when the nuclear plant exploded.

2. Waste water from many factories which is dumped... water bodies directly causes water pollution.

3. Land pollution is responsible for damage done ... natural habitat of animals.

4. Americans throw... twenty-eight and a half million tons of plastic in landfills every year.

5. Scientist have come up ... new ways of saving energy.

II. Circle the mistake in each sentence, and then correct it.

1. Long exposure to loud noise results permanent hearing loss.

2. The misuse of resources and improper dumping of waste make land pollution.

3. The soil becomes contaminated because the use of so many pesticides and other farming chemicals.

4. Oil slicks from boats or ships pollute the sea, because many fish and sea birds die.

5. In many developing countries, water pollution is usually a leading cause of death if people drink from polluted water sources.

6. We should plant trees in our neighbourhood so trees help cool the planet.

III

The major cause of water pollution in Vietnam is the weakness industrial wastewater management. Many factories.... fresh water to carry away waste... their plants into canal rivers and lakes. Most of them do not have.... wastewater treatment system. Industrial was water is directly discharged into canals, lakes, ponds and rivers, causing serious... of surface water. For example,... 2008, Vedan factory, a sodium glutamate plant, release their untreated industrial wastewater into the Thi Vai River and... tons of fish and ducks the river to die.

Another cause of water pollution in Vietnam is the lack of awareness among citizens. Every day people genera a lot of... , and they throw it directly into canals, rivers and ponds. They... water from these sources to do their laundry, wash dishes, bathe and then they throw the dirty water that cointain detergent and shampoo directly into them.

1
3 tháng 1 2018

I. Fill in each blank with the correct preposition.

1. Thousands of people were exposed..to. radiation when the nuclear plant exploded.

2. Waste water from many factories which is dumped.into.. water bodies directly causes water pollution.

3. Land pollution is responsible for damage done .to.. natural habitat of animals.

4. Americans throw..away. twenty-eight and a half million tons of plastic in landfills every year.

5. Scientist have come up ..with. new ways of saving energy.

II. Circle the mistake in each sentence, and then correct it.

1. Long exposure to loud noise results->results in permanent hearing loss.

2. The misuse of resources and improper dumping of waste make->cause land pollution.

3. The soil becomes contaminated because->because of the use of so many pesticides and other farming chemicals.

4. Oil slicks from boats or ships pollute the sea, because->therefore many fish and sea birds die.

5. In many developing->developed countries, water pollution is usually a leading cause of death if people drink from polluted water sources.

6. We should plant trees in our neighbourhood so->because trees help cool the planet.

III

The major cause of water pollution in Vietnam is the weakness industrial wastewater management. Many factories..use.. fresh water to carry away waste..from. their plants into canal rivers and lakes. Most of them do not have..any.. wastewater treatment system. Industrial was water is directly discharged into canals, lakes, ponds and rivers, causing serious.pollution. of surface water. For example,..in. 2008, Vedan factory, a sodium glutamate plant, release their untreated industrial wastewater into the Thi Vai River and.caused.. tons of fish and ducks the river to die.

Another cause of water pollution in Vietnam is the lack of awareness among citizens. Every day people genera a lot of..trash. , and they throw it directly into canals, rivers and ponds. They.collect.. water from these sources to do their laundry, wash dishes, bathe and then they throw the dirty water that cointain detergent and shampoo directly into them.

WORD FORM & VERB TENSES OF UNIT 7-8 (ENGLISH 8TH) I. WORD FORM: 1. The soil becomes ____________________ because of the use of so many pesticides and fertilizers. (contaminate) 2. ____________________ waste spills can contaminate groundwater. (industry) 3. In many developing countries, water pollution is usually a leading cause of ______________________. (die) 4. ___________________ elements have been found in both ground and underground water sources. (pollute) 5....
Đọc tiếp

WORD FORM & VERB TENSES OF UNIT 7-8 (ENGLISH 8TH)

I. WORD FORM:

1. The soil becomes ____________________ because of the use of so many pesticides and fertilizers. (contaminate)

2. ____________________ waste spills can contaminate groundwater. (industry)

3. In many developing countries, water pollution is usually a leading cause of ______________________. (die)

4. ___________________ elements have been found in both ground and underground water sources. (pollute)

5. Fish and many other animals are killed by __________________ in their habitats. (pollute)

6. Astronomers are concerned about light pollution because they have __________________ in viewing activities in the sky and outer space. (difficult)

7. __________________ habitats have been destroyed in recent years. (nature)

8. A number of cleaning products contain _________________ chemicals. (harm)

9. Water samples collected at these villages were seriously __________________ with bacteria. (comtanimate)

10. People believe that the _________________ water has brought cancer to the local residents. (pollute)

11. Light pollution makes us __________________ to see the stars in the sky. (able)

12. Noise is considered as ____________________ pollution. (environment)

13. The ___________________ of lakes, rivers, oceans or underwater causes water pollution. (contaminate)

14. The street doesn’t look __________________ because it has a lot of rubbish. (attract)

15. Are all types of pollution __________________ to the health of human and animals. (harm)

16. The ____________________ are concerned about the oil spills in East Sea. (environment)

17. Dumping ____________________ waste into the lakes and rivers has caused serious water pollution. (industry)

18. Many people in this area have cholera because they drink ___________________ water. (treat)

19. Examples of primary __________________ are exhaust fumes from cars, soot from smoke. (pollute)

20. If we use water __________________, more people will have fresh water. (care)

21. The polluted water results in the __________________ of many aquatic animals and plants. (die)

22. Both French and English are ____________________ languages in Canada. (office)

23. NSW is the ___________________ of New South Wales, the most populous state in Australia. (abbreviate)

24. Do you know that the telephone, the television, and penicillin are Scottish ___________________? (invent)

25. Visitors can spend __________________ days exploring amazing natural beauty of New Zealand. (end)

26. There are different kinds of __________________ provided throughout Disneyland. (entertain)

27. Scotland is a __________________ land and this is noted for its rich and interesting history. (legend)

28. Niagara Falls, on the border of the USA and Canada, is one of the most ___________________ scenery in the world. (spectacle)

29. There are many tourist _____________________ in London such as British Museum, London Eye and Tower of London. (attact)

30. We’ll take the early _____________________ from Sydney to Wellington. (fly)

2
11 tháng 2 2019

WORD FORM & VERB TENSES OF UNIT 7-8 (ENGLISH 8TH)

I. WORD FORM:

1. The soil becomes ______contaminated______________ because of the use of so many pesticides and fertilizers. (contaminate)

2. ______Industrial______________ waste spills can contaminate groundwater. (industry)

3. In many developing countries, water pollution is usually a leading cause of ________death______________. (die)

4. _______Polluted____________ elements have been found in both ground and underground water sources. (pollute)

5. Fish and many other animals are killed by ______pollutants____________ in their habitats. (pollute)

6. Astronomers are concerned about light pollution because they have ________difficulty__________ in viewing activities in the sky and outer space. (difficult)

7. ________Natural__________ habitats have been destroyed in recent years. (nature)

8. A number of cleaning products contain ______harmful___________ chemicals. (harm)

9. Water samples collected at these villages were seriously ______contaminated____________ with bacteria. (contanimate)

10. People believe that the _______polluted__________ water has brought cancer to the local residents. (pollute)

11. Light pollution makes us ________unable__________ to see the stars in the sky. (able)

12. Noise is considered as ________environmental____________ pollution. (environment)

13. The ________contamination___________ of lakes, rivers, oceans or underwater causes water pollution. (contaminate)

14. The street doesn’t look ________attractive__________ because it has a lot of rubbish. (attract)

15. Are all types of pollution _________harmful_________ to the health of human and animals? (harm)

16. The _______environmentalists_____________ are concerned about the oil spills in East Sea. (environment)

17. Dumping _____industrial_______________ waste into the lakes and rivers has caused serious water pollution. (industry)

18. Many people in this area have cholera because they drink _______untreated____________ water. (treat)

19. Examples of primary ________pollutants__________ are exhaust fumes from cars, soot from smoke. (pollute)

20. If we use water ________carefully__________, more people will have fresh water. (care)

21. The polluted water results in the ________death__________ of many aquatic animals and plants. (die)

22. Both French and English are _________official___________ languages in Canada. (office)

23. NSW is the _____abbreviation______________ of New South Wales, the most populous state in Australia. (abbreviate)

24. Do you know that the telephone, the television, and penicillin are Scottish _________inventions__________? (invent)

25. Visitors can spend ______ended____________ days exploring amazing natural beauty of New Zealand. (end)

26. There are different kinds of ________entertainment__________ provided throughout Disneyland. (entertain)

27. Scotland is a ______legendary____________ land and this is noted for its rich and interesting history. (legend)

28. Niagara Falls, on the border of the USA and Canada, is one of the most ________spectacular___________ scenery in the world. (spectacle)

29. There are many tourist __________attracted___________ in London such as British Museum, London Eye and Tower of London. (attact)

30. We’ll take the early _________flight____________ from Sydney to Wellington. (fly)

21 tháng 2 2019

Girl zombie

*Combine each pải ò sentences, using the words givenl. People eat dirty food. They can be cancer. (If)_______________________________________________________________________________2. A factory directly discharges a large volume of waste water into the Thi Vai River. The river ispolluted. (If)_______________________________________________________________________________3. Farmers use polluted water to water their plants. People eat these plants, they become sick withdiseases such as...
Đọc tiếp

*Combine each pải ò sentences, using the words given

l. People eat dirty food. They can be cancer. (If)

_______________________________________________________________________________

2. A factory directly discharges a large volume of waste water into the Thi Vai River. The river is

polluted. (If)

_______________________________________________________________________________

3. Farmers use polluted water to water their plants. People eat these plants, they become sick with

diseases such as diarrhea, bacterial inflections even cancer. (If)

_______________________________________________________________________________

4. Thermal pollution takes place. The water temperature in streams, rivers, lakes and oceans will increase

or decrease suddenly. (If)

_______________________________________________________________________________

5. People live in radioactive pollution area. They can be skin cancer. (If)

_______________________________________________________________________________

6. One effect of global warming is that sea levels are rising. The polar icecaps are melting. (because)

_______________________________________________________________________________

7. The global population has increased. There are much better levels of nutrition. (because of)

_______________________________________________________________________________

8. Nuclear explosions and detonations of nuclear weapons cause radioactive pollution. (lead to)

_______________________________________________________________________________

9. More and more roads are being built. Air pollution is rising. (as a consequence)

_______________________________________________________________________________

10. The fish and other aquatic animals have died. The water is polluted. (due to)

_______________________________________________________________________________

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IV. Read the text below and think of the word which best fits each space. Use only ONE word in each space. People have always dreamed of living forever, and although we all know this will (1) __________ happen, we still want to live as long as possible. Naturally, there are advantages and disadvantages to a long (2) __________. In the first place, people (3) __________ live longer can spend more time with their family and friends. Secondly, people who have busy working lives look...
Đọc tiếp

IV. Read the text below and think of the word which best fits each space. Use only ONE word in each space.

People have always dreamed of living forever, and although we all know this will (1) __________ happen, we still want to live as long as possible. Naturally, there are advantages and disadvantages to a long (2) __________.

In the first place, people (3) __________ live longer can spend more time with their family and friends. Secondly, people who have busy working lives look forward to a long, relaxing time when they can do the things they have never had time for.

(4) __________ the other hand, there are some serious disadvantages. Firstly, many people become ill and consequently have to (5) __________ time in hospital or become dependent (6) __________ their children and friends. Many of them (7) __________ this dependence annoying or embarrassing. In addition to this, the (8) __________ people get, the fewer friends they seem to have because old friends die or become ill and it's often difficult to make new (9) __________

To sum up, it seems that living to a very old age is worthwhile for people who stay healthy (10) ________ to remain independent and enjoy life.

2
22 tháng 12 2018

IV. Read the text below and think of the word which best fits each space. Use only ONE word in each space.

People have always dreamed of living forever, and although we all know this will (1) never happen, we still want to live as long as possible. Naturally, there are advantages and disadvantages to a long (2) life.

In the first place, people (3) who live longer can spend more time with their family and friends. Secondly, people who have busy working lives look forward to a long, relaxing time when they can do the things they have never had time for.

(4) On the other hand, there are some serious disadvantages. Firstly, many people become ill and consequently have to (5) spend time in hospital or become dependent (6) on their children and friends. Many of them (7) find this dependence annoying or embarrassing. In addition to this, the (8) older people get, the fewer friends they seem to have because old friends die or become ill and it's often difficult to make new (9) friends.

To sum up, it seems that living to a very old age is worthwhile for people who stay healthy (10) enough to remain independent and enjoy life.

22 tháng 12 2018

1. never

2. life

3. who

4. On

5. spend

6. on

7. find

8. older

9. friends

10. enough

18 tháng 3 2018

1 We'll take the early flight from Sydney to Wellington(fly)

2 Niagara Falls on the border of the USA anfd Canada is one of the most spectacular scenery in the world (spectacle)

3 Industrial waste spills can contaminate groundwater(industry)

4 Polluted elements have been found in both ground and underground water sources(pollute)

5astronomers are concerned about light pollution because they have difficulty in viewing activities in the sky and outer space (difficult)

6 fish and many other animals are killed by ______in their habitat

19 tháng 3 2018

6 fish and many other animals are killed by pollution in their habitat (pollute)

1. The soil becomes ________ because of the use of so many pesticides and fertilizers. (contaminate) 2. ______________ waste spills can contaminate groundwater. (industry) 3. ________ elements have been found in both ground and underground water sources. (pollute) 4. Fish and many other animals are killed by __________________ in their habitats. (pollute) 5. Astronomers are concerned about light pollution because they have _________ in viewing activities in the sky and outer...
Đọc tiếp

1. The soil becomes ________ because of the use of so many pesticides and fertilizers. (contaminate)

2. ______________ waste spills can contaminate groundwater. (industry)

3. ________ elements have been found in both ground and underground water sources. (pollute)

4. Fish and many other animals are killed by __________________ in their habitats. (pollute)

5. Astronomers are concerned about light pollution because they have _________ in viewing activities in the sky and outer space. (difficult)

6. ___________ habitats have been destroyed in recent years. (nature)

7. A number of cleaning products contain _________________ chemicals. (harm)

8. The polluted water results in the _____________ of many aquatic animals and plants. (die)

9. Both French and English are ____________________ languages in Canada. (office)

10. NSW is the _________ of New South Wales, the most populous state in Australia. (abbreviate)

11. Do you know that the telephone, the television, and penicillin are Scottish _______? (invent)

12. Visitors can spend __________ days exploring amazing natural beauty of New Zealand. (end)

13. There are different kinds of _____________ provided throughout Disneyland. (entertain)

14. Scotland is a __________ land and this is noted for its rich and interesting history. (legend)

15. Niagara Falls, on the border of the USA and Canada, is one of the most __________ scenery in the world. (spectacle)

2
1 tháng 5 2018

1. The soil becomes contaminated because of the use of so many pesticides and fertilizers. (contaminate)

2. Industrial waste spills can contaminate groundwater. (industry)

3. Pollutant elements have been found in both ground and underground water sources. (pollute)

4. Fish and many other animals are killed by pollution in their habitats. (pollute)

5. Astronomers are concerned about light pollution because they have difficulty in viewing activities in the sky and outer space. (difficult)

6. Natural habitats have been destroyed in recent years. (nature)

7. A number of cleaning products contain harmful chemicals. (harm)

8. The polluted water results in the death of many aquatic animals and plants. (die)

9. Both French and English are offical languages in Canada. (office)

10. NSW is the abbreviation of New South Wales, the most populous state in Australia. (abbreviate)

11. Do you know that the telephone, the television, and penicillin are Scottish invention ? (invent)

12. Visitors can spend enless days exploring amazing natural beauty of New Zealand. (end)

13. There are different kinds of entertainment provided throughout Disneyland. (entertain)

14. Scotland is a legendary land and this is noted for its rich and interesting history. (legend)

15. Niagara Falls, on the border of the USA and Canada, is one of the most spectacular scenery in the world. (spectacle)

27 tháng 10 2019

1. The soil becomes contaminated because of the use of so many pesticides and fertilizers.

2. Industrial waste spills can contaminate groundwater.

3. Pollutant elements have been found in both ground and underground water sources.

4. Fish and many other animals are killed by pollution in their habitats.

5. Astronomers are concerned about light pollution because they have difficulty in viewing activities in the sky and outer space.

6. Natural habitats have been destroyed in recent years.

7. A number of cleaning products contain harmful chemicals.

8. The polluted water results in the death of many aquatic animals and plants.

9. Both French and English are offical languages in Canada.

10. NSW is the abbreviation of New South Wales, the most populous state in Australia.

11. Do you know that the telephone, the television, and penicillin are Scottish invention ?

12. Visitors can spend enless days exploring amazing natural beauty of New Zealand.

13. There are different kinds of entertainment provided throughout Disneyland.

14. Scotland is a legendary land and this is noted for its rich and interesting history.

15. Niagara Falls, on the border of the USA and Canada, is one of the most spectacular scenery in the world.

Read the text and then choose the best answer A, B, C of D Two of the most dangerous storms which affect America are hurricanes and tornadoes. They are very much feared by anyone who may live in the path of their destruction. Every year homes are destroyed by their fury anf often lives are lost. Most people who live near the coast are forced to evacuate their homes and to move to safer areas until the storms passes. Floods are caused along the coast by both the heavy rain and a storm tide...
Đọc tiếp

Read the text and then choose the best answer A, B, C of D

Two of the most dangerous storms which affect America are hurricanes and tornadoes. They are very much feared by anyone who may live in the path of their destruction.

Every year homes are destroyed by their fury anf often lives are lost. Most people who live near the coast are forced to evacuate their homes and to move to safer areas until the storms passes. Floods are caused along the coast by both the heavy rain and a storm tide that is considerably above normal water level. The high winds, coastal flooding and heavy rains associated with a hurricane cause enormous damage. Hurricanes usually develop between July and October. Once they hit land they tremendous power with driving rain and wind.

Tornadoes are violent low-pressured storms. These storms occur most often during the summer months are noticeable by their strong wind and lack of rain. The sky turn black as dust is sucked up into the air. Tornadoes are capable of lifting quite heavy objects from the ground. They can pick up trees and cars right into the air and even uplift heavier objects such as homes and trains.

Both hurricanes and tornadoes cause millions of dollars worth of damage to life and property every year. Today they can be predicted more easily than in the past, but they can't be stopped or ignored.

1. What are the most dangerous storms which affect America?

A. Thunderstorms and hurricanes

B. Typhoon and thunderstorms

C. Hurricanes and typhoons

D. Hurricanes and tornadoes

2. At which part of the year do hurricanes usually develop?

A. Between July and October

B. Between July and December

C. From the seventh to the ninth month

D. All the year round.

3. What is the major similarity of both a hurricane and a tornado?

A. They can cause great damage.

B. They have either wind or speed.

C. They are not accompanied by rain.

D. They cover only a small part.

4. Which of the following is true of tornadoes and hurricanes?

A. They cannot be predicted with accuracy.

B. They are easier to control today than in the past.

C. Tornadoes are more dangerous than hurricanes.

D. People can predict them with greater accuracy.

5. Which of the following was not mentioned in the article?

A. The tremendous power of these storms.

B. The damage caused by hurricanes and tornadoes.

C. The numbers of people killed each year by these storms.

D. The time of year when they are most likely to strike.

1
3 tháng 3 2019

1. What are the most dangerous storms which affect America?

A. Thunderstorms and hurricanes

B. Typhoon and thunderstorms

C. Hurricanes and typhoons

D. Hurricanes and tornadoes

2. At which part of the year do hurricanes usually develop?

A. Between July and October

B. Between July and December

C. From the seventh to the ninth month

D. All the year round.

3. What is the major similarity of both a hurricane and a tornado?

A. They can cause great damage.

B. They have either wind or speed.

C. They are not accompanied by rain.

D. They cover only a small part.

4. Which of the following is true of tornadoes and hurricanes?

A. They cannot be predicted with accuracy.

B. They are easier to control today than in the past.

C. Tornadoes are more dangerous than hurricanes.

D. People can predict them with greater accuracy.

5. Which of the following was not mentioned in the article?

A. The tremendous power of these storms.

B. The damage caused by hurricanes and tornadoes.

C. The numbers of people killed each year by these storms.

D. The time of year when they are most likely to strike.

I/PUT EACH OF THE VERBS IN BRACKETS INTO THE CORRECT TENSE OR FORM. 1.What ___________________you___________________(do)when I called yesterday? 2.While I_______________(cook),he________________(watch)TV. 3.The girl asked her parents(give)_____________________________her some advice. 4.At 8p.m yesterday,my mother_____(teach)at school and my father_________(work)in his office. 5.It was 5p.m,and it______________(get)darker and darker. II/COMPLETE THE SENTENCES WITH THE CORRECT FORM OF THE...
Đọc tiếp

I/PUT EACH OF THE VERBS IN BRACKETS INTO THE CORRECT TENSE OR FORM.

1.What ___________________you___________________(do)when I called yesterday?

2.While I_______________(cook),he________________(watch)TV.

3.The girl asked her parents(give)_____________________________her some advice.

4.At 8p.m yesterday,my mother_____(teach)at school and my father_________(work)in his office.

5.It was 5p.m,and it______________(get)darker and darker.

II/COMPLETE THE SENTENCES WITH THE CORRECT FORM OF THE WORDS IN THE BRACKET.EACH WORD IS USED ONCE.

erode deplete contamintade deforest consume destroy protect pollute

1.The___)_of fossil fuels has gradually increased in many countries which is concern for many environmentalists.

2.The increase in cases of skin cancer has been recorded in parallel with ozone layer_____________.

3.Intensive pesticide and tertilizer sprays used in agriculture have resulted in the serious_________of water,soil and air.

4.The______of the river has been proved by scientists to be caused by the dumping of untreated sewage.

5.Scientists are able to explain the consequences of habitat___________now.

6.Everyday about 15,000 acres of tertile topsoil are washed away in Haiti,which has resulted in massive soil_____________________________

7.The_______of the environment from threats such as deforeststation,the extiction of rare species,pollution and natural resource depletion is one of the WWF's missions.

8.The______caused during the 20th century made the vegetation in this region,which was originally a vast forest refuge for innumerable species,disappear.



2
2 tháng 8 2018

II/COMPLETE THE SENTENCES WITH THE CORRECT FORM OF THE WORDS IN THE BRACKET.EACH WORD IS USED ONCE.

erode deplete contamintade deforest consume destroy protect pollute

1.The_consumption___of fossil fuels has gradually increased in many countries which is concern for many environmentalists.

2.The increase in cases of skin cancer has been recorded in parallel with ozone layer__depletion___________.

3.Intensive pesticide and tertilizer sprays used in agriculture have resulted in the serious___pollution________of water,soil and air.

4.The__contamination____of the river has been proved by scientists to be caused by the dumping of untreated sewage.

5.Scientists are able to explain the consequences of habitat___destruction_____now.

6.Everyday about 15,000 acres of tertile topsoil are washed away in Haiti,which has resulted in massive soil____erosion______

7.The__protection_____of the environment from threats such as deforeststation,the extiction of rare species,pollution and natural resource depletion is one of the WWF's missions.

8.The__deforestation____caused during the 20th century made the vegetation in this region,which was originally a vast forest refuge for innumerable species,disappear.

2 tháng 8 2018

I/PUT EACH OF THE VERBS IN BRACKETS INTO THE CORRECT TENSE OR FORM.

1.What ___did___you___do__(do)when I called yesterday?

2.While I___was cooking______(cook),he__was watching____(watch)TV.

3.The girl asked her parents(give)____to give ____her some advice.

4.At 8p.m yesterday,my mother_was teaching____(teach)at school and my father__was working____(work)in his office.

5.It was 5p.m,and it__was getting______(get)darker and darker.