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5 tháng 8 2019

2. Fill in the missing word.

1. There is a lack…OF….clear information about GM food.

2. If we don’t find renewable sources of energy, we will end…UP…with serious problems.

3. We are…IN…danger of losing many wild flowers because of the use of chemical sprays.

4. If you have breathing problems, you must give…UP .smoking.

5. Positive changes, however small, …MAKE….a difference to the environment.

6. Many children who live in polluted cities suffer…FROM……asthma.

7. The new factory will be built…ON…..condition that it disposes of its waste responsibly.

8. By the end of May we will have…BEEN……working on the project for two years.

9. We must take care of the earth now,…OR…else future generations will suffer.

10. Try to cut..........DOWN......... on the amount of paper you use in the office.

5 tháng 8 2019

2. Fill in the missing word.

1. There is a lack…of….clear information about GM food.

2. If we don’t find renewable sources of energy, we will end…up…with serious problems.

3. We are…in…danger of losing many wild flowers because of the use of chemical sprays.

4. If you have breathing problems, you must give…up.smoking.

5. Positive changes, however small, …makes….a difference to the environment.

6. Many children who live in polluted cities suffer…from…asthma.

7. The new factory will be built…in…..condition that it disposes of its waste responsibly.

8. By the end of May we will have…kept……working on the project for two years.

9. We must take care of the earth now,…or…else future generations will suffer.

10. Try to cut........down........... on the amount of paper you use in the office.

A hundred years ago, most people traveled on foot, by train, or on horseback. Railways made (1) ______ possible to travel rapidly over long distances. (2) _____ were also becoming popular, after the invention of the air - filled tire, which made cycling a lot more comfortable. Buses, trams and underground railways (3) _____ invented, and cities all over the (4) _____ already had traffic jams. There were very (5) ______ private cars and city streets were still full of horses. What a difference...
Đọc tiếp

A hundred years ago, most people traveled on foot, by train, or on horseback. Railways made (1) ______ possible to travel rapidly over long distances. (2) _____ were also becoming popular, after the invention of the air - filled tire, which made cycling a lot more comfortable. Buses, trams and underground railways (3) _____ invented, and cities all over the (4) _____ already had traffic jams. There were very (5) ______ private cars and city streets were still full of horses.

What a difference a hundred years have made? Nowadays we have got used (6) _____ the problem of private cars, and some cities are (7) _____ noisy and polluted that in many places vehicles have been banned from the city center. (8) _____ will we travel in a hundred years’ time? Perhaps by then there will be only personal helicopters. (9) ______may be no need to travel to work or school in the future, since everyone will have a computer at home. There might even be more (10) _____ walking and horse - riding, for pleasure

2
28 tháng 5 2017

A hundred years ago, most people traveled on foot, by train, or on horseback. Railways made (1) IT possible to travel rapidly over long distances. (2) BIKES were also becoming popular, after the invention of the air - filled tire, which made cycling a lot more comfortable. Buses, trams and underground railways (3) WERE invented, and cities all over the (4) WORLD already had traffic jams. There were very (5) FEW private cars and city streets were still full of horses.

What a difference a hundred years have made? Nowadays we have got used (6) TO the problem of private cars, and some cities are (7) SO noisy and polluted that in many places vehicles have been banned from the city center. (8) HOW will we travel in a hundred years’ time? Perhaps by then there will be only personal helicopters. (9) THERE may be no need to travel to work or school in the future, since everyone will have a computer at home. There might even be more (10) PEOPLE walking and horse - riding, for pleasure

28 tháng 5 2017

A hundred years ago, most people traveled on foot, by train, or on horseback. Railways made (1) __it____ possible to travel rapidly over long distances. (2) _Bicycles____ were also becoming popular, after the invention of the air - filled tire, which made cycling a lot more comfortable. Buses, trams and underground railways (3) __were___ invented, and cities all over the (4) __have___ already had traffic jams. There were very (5) __few____ private cars and city streets were still full of horses.

What a difference a hundred years have made? Nowadays we have got used (6) __to___ the problem of private cars, and some cities are (7) ___so__ noisy and polluted that in many places vehicles have been banned from the city center. (8) _how____ will we travel in a hundred years’ time? Perhaps by then there will be only personal helicopters. (9) __there____may be no need to travel to work or school in the future, since everyone will have a computer at home. There might even be more (10) _people____ walking and horse - riding, for pleasure

PART VII: (2.0 pts) Read the following passage and circle the answers A, B, C or D which is most accurate according to the information given in the passage. In order to help solve the problem of pollution, people have to be aware of its causes, some of which are quite obvious in everyday life. In many cities people are forced to breathe in polluted air, commonly known as smog, which is a mixture of gases sent out by car exhausts and factory chimneys. What can be done to reduce air pollution is...
Đọc tiếp

PART VII: (2.0 pts) Read the following passage and circle the answers A, B, C or D which is most accurate according to the information given in the passage.

In order to help solve the problem of pollution, people have to be aware of its causes, some of which are quite obvious in everyday life. In many cities people are forced to breathe in polluted air, commonly known as smog, which is a mixture of gases sent out by car exhausts and factory chimneys. What can be done to reduce air pollution is to remove factories from cities and use lead-free petrol in cars.

The pollution of rivers, lakes and seas leads to the death of the creatures that live in them. Factories are largely responsible for the present situation, which is expected to worsen if governments do not make them to obey the law against pollution and punish industries which pollute water.

Finally, all over the world, especially in cities, we see huge amounts of rubbish in the streets, which we are responsible for. The rubbish collection system often does not work properly and people themselves add to the problem by dropping litter in the streets. There is so much we could do to help solve the problem. The point is how willing are we to do something about it?

1. In order to help solve the problem of pollution,
A people need to know what causes it.
B people don’t need to know what causes it.
C people have to do something immediately.
D people don’t need to do anything about it.

2. Smog is caused by
A cars only
B factories only.
C cars and factories.
D air

3. The pollution of rivers, lakes and seas is largely caused by
A car exhausts.
B lead-free petrol in cars.
C factories.
D creatures.

4. Which of the following is NOT true?
A People add to the problem of pollution by collecting rubbish.
B People add to the problem of pollution by dropping litter.
C Huge amounts of rubbish in the cities cause pollution.
D We are responsible for huge amounts of rubbish in the cities.

5. The opposite of the word properly in the passage is
A unproperly B disproperly
C improperly D inproperly

2
27 tháng 12 2017

PART VII: (2.0 pts) Read the following passage and circle the answers A, B, C or D which is most accurate according to the information given in the passage.

In order to help solve the problem of pollution, people have to be aware of its causes, some of which are quite obvious in everyday life. In many cities people are forced to breathe in polluted air, commonly known as smog, which is a mixture of gases sent out by car exhausts and factory chimneys. What can be done to reduce air pollution is to remove factories from cities and use lead-free petrol in cars.

The pollution of rivers, lakes and seas leads to the death of the creatures that live in them. Factories are largely responsible for the present situation, which is expected to worsen if governments do not make them to obey the law against pollution and punish industries which pollute water.

Finally, all over the world, especially in cities, we see huge amounts of rubbish in the streets, which we are responsible for. The rubbish collection system often does not work properly and people themselves add to the problem by dropping litter in the streets. There is so much we could do to help solve the problem. The point is how willing are we to do something about it?

1. In order to help solve the problem of pollution,
A people need to know what causes it.
B people don’t need to know what causes it.
C people have to do something immediately.
D people don’t need to do anything about it.

2. Smog is caused by
A cars only
B factories only.
C cars and factories.
D air

3. The pollution of rivers, lakes and seas is largely caused by
A car exhausts.
B lead-free petrol in cars.
C factories.
D creatures.

4. Which of the following is NOT true?
A People add to the problem of pollution by collecting rubbish.
B People add to the problem of pollution by dropping litter.
C Huge amounts of rubbish in the cities cause pollution.
D We are responsible for huge amounts of rubbish in the cities.

5. The opposite of the word properly in the passage is
A unproperly B disproperly
C improperly D inproperly

27 tháng 12 2017

cảm ơnyeu

PART VII: (2.0 pts) Read the following passage and circle the answers A, B, C or D which is most accurate according to the information given in the passage. In order to help solve the problem of pollution, people have to be aware of its causes, some of which are quite obvious in everyday life. In many cities people are forced to breathe in polluted air, commonly known as smog, which is a mixture of gases sent out by car exhausts and factory chimneys. What can be done to reduce air pollution is...
Đọc tiếp

PART VII: (2.0 pts) Read the following passage and circle the answers A, B, C or D which is most accurate according to the information given in the passage.

In order to help solve the problem of pollution, people have to be aware of its causes, some of which are quite obvious in everyday life. In many cities people are forced to breathe in polluted air, commonly known as smog, which is a mixture of gases sent out by car exhausts and factory chimneys. What can be done to reduce air pollution is to remove factories from cities and use lead-free petrol in cars.

The pollution of rivers, lakes and seas leads to the death of the creatures that live in them. Factories are largely responsible for the present situation, which is expected to worsen if governments do not make them to obey the law against pollution and punish industries which pollute water.

Finally, all over the world, especially in cities, we see huge amounts of rubbish in the streets, which we are responsible for. The rubbish collection system often does not work properly and people themselves add to the problem by dropping litter in the streets. There is so much we could do to help solve the problem. The point is how willing are we to do something about it?

1. In order to help solve the problem of pollution,
A people need to know what causes it.
B people don’t need to know what causes it.
C people have to do something immediately.
D people don’t need to do anything about it.

2. Smog is caused by
A cars only
B factories only.
C cars and factories.
D air

3. The pollution of rivers, lakes and seas is largely caused by
A car exhausts.
B lead-free petrol in cars.
C factories.
D creatures.

4. Which of the following is NOT true?
A People add to the problem of pollution by collecting rubbish.
B People add to the problem of pollution by dropping litter.
C Huge amounts of rubbish in the cities cause pollution.
D We are responsible for huge amounts of rubbish in the cities.

5. The opposite of the word properly in the passage is
A unproperly B disproperly
C improperly D inproperly

0
31 tháng 8 2021

1 ambitious

2 furnishment

3 entertaining

4 enjoyable

5 lovely

31 tháng 8 2021

1 ambitious ( cần 1 tính từ do " đứng giữa "more..........than", ambitious: đầy tham vọng, tham lam)

2 funiture ( cần 1 danh từ , do đứng sau "a lot of" , furniture : nội thất)

3 entertaining ( cần 1 tính từ : sau more , entertaining : thú vị)

4 enjoyable ( cần 1 tính từ : trước danh từ< enjoyable : thú vị)

5 lovely ( cần 1 tính từ : sau to be, lovely : đẹp)

A.Rewrite the following sentences using the second conditional sentences. 1. I can't give you a lift because I don't have a car. If.......................................................... 2. We won't have a holiday because we don't have enough money. If............................................................ 3. I don't know the answer, so I can't tell you. If..................................................,............ 4. There aren't any eggs so I won't make an omelette....
Đọc tiếp

A.Rewrite the following sentences using the second conditional sentences.

1. I can't give you a lift because I don't have a car.

If..........................................................

2. We won't have a holiday because we don't have enough money.

If............................................................

3. I don't know the answer, so I can't tell you.

If..................................................,............

4. There aren't any eggs so I won't make an omelette.

If.........................................................

5. We have three children, so we won't take a year off to travel around the world.

If..............................,...........................

6. I'm not very clever, so I won't be a doctor.

If......................................................

7. He spends all his money gambling. He isn't a wealthy man.

If................................................................................

8. I don't have any spare time. I won't learn Russian.

If..........,...............................................,............

9. Jim works very hard. He has no tine to spend with his family.

If.................................................................

10. I have a headache. I can't go swimming.

If...................................................................

11. We don't have a big house. We can't invite friends to stay.

If....................................................................

1
24 tháng 8 2017

A.Rewrite the following sentences using the second conditional sentences.

1. I can't give you a lift because I don't have a car.

If...........................I HAD A CAR, I COULD GIVE YOU A LIFT...............................

2. We won't have a holiday because we don't have enough money.

If.............WE HAD ENOUGH MONEY ,Ư WE WOULD HAVE A HOLIDAY...............................................

3. I don't know the answer, so I can't tell you.

If.............I KNEW THE ANSWER , I COULD TELL YOU.....................................,............

4. There aren't any eggs so I won't make an omelette.

If.......THERE WERE SOME EGGS , I WOULD MAKE OMELETTE.................................................

5. We have three children, so we won't take a year off to travel around the world.

If.............WE DIDN'T HAVE THREE CHILDREN , WE WOULD TAKE A YEAR OFF TO TRAVEL ẢOUND THE WORLD.................,...........................

6. I'm not very clever, so I won't be a doctor.

If................I WERE VERY CLEVER , WOULD BE A DOCTOR......................................

7. He spends all his money gambling. He isn't a wealthy man.

If.............HE WERE A WEALTHY MAN , HE WOULDN'T SPEND ALL HIS MONEY GAMBLING...................................................................

8. I don't have any spare time. I won't learn Russian.

If..........,........I HAD SOME TIME , I WOULD LEARN RUSSIAN.......................................,............

9. Jim works very hard. He has no tine to spend with his family.

If.....................IF JIM DIDN'T WORK HARD, HE WOULD HAVE TIME TO SPEND WITH HIS FAMILY............................................

10. I have a headache. I can't go swimming.

If................ DIDN'T HAVE A HEADACHE , I COULD GO SWIMMING...................................................

11. We don't have a big house. We can't invite friends to stay.

If..................WE HAD A BIG HOUSE , WE COULD INVITE FRIENDS TO STAY..................................................

Đề bài: Choose the letter A, B, C or D to complete the sentences with given words Question 1: You/ will/ receive/ discount/ every/ five parcels. A. You will receiving discount for every five parcels. B. You will to receive discount for every five parcels. C. You will receive discount for every five parcels. D. You will be receive discount for every five parcels. Question 2:...
Đọc tiếp
Đề bài: Choose the letter A, B, C or D to complete the sentences with given words Question 1: You/ will/ receive/ discount/ every/ five parcels. A. You will receiving discount for every five parcels. B. You will to receive discount for every five parcels. C. You will receive discount for every five parcels. D. You will be receive discount for every five parcels. Question 2: This/ restaurant’s food/ taste/ very/ delicious. A. This restaurant’s food taste very delicious. B. This restaurant’s foods tastes very delicious. C. This restaurant’s foods to taste very delicious. D. This restaurant’s food tastes very delicious. Question 3: The street/ not/ look/ attractive/ because/ there/ be/ a lot of/ rubbish. A. The street not look attractive because there’s a lot of rubbish. B. The street not look attractive because there’re a lot of rubbish. C. The street doesn’t look attractive because there’s a lot of rubbish. D. The street don’t look attractive because there’re a lot of rubbish. Question 4: The music club/ be/ make/ so/ much noise/ that/ the residents/ require/ them/ turn/ the music/ down. A. The music club is making so much noise that the residents require them to turn the music down. B. The music club is make so much noise that the residents require them to turn the music down. C. The music club be make so much noise that the residents require them to turn the music down. D. The music club be making so much noise that the residents require them to turn the music down. Question 5: Television/ a tool/ gain/ education/ information. A. Television is a tool to gain education and information. B. Television is a tool gaining education and information. C. Television are a tool to gain education and information. D. Television are a tool gaining education and information. Đề bài: Rearrange the sentences to make meaningful sentences Question 6: I/ since/ lived/ was/ have/ here/ I/ small. A. I have lived here since I was small. B. I have lived since I was here small. C. I was lived here since I have small. D. I have lived since I was small here. Question 7: time/ is/ TV/ a/ waste/ Watching/ of A. Watching TV is a time waste of. B. Watching time is a waste of TV. C. Watching TV is time of a waste. D. Watching TV is a waste of time. Question 8: of/ are/ Plastic/ of/ source/ the/ main/ bags/ one/ pollution. A. Plastic bags are the one of main source of pollution. B. Plastic bags are one of source of the main pollution. C. Plastic bags are one of the main source of pollution. D. Plastic of bags are one pollution of the main source. Question 9: the/ The/ corner/ around/ exhibition/ just/ is. A. The exhibition is just around the corner. B. The exhibition just is around the corner. C. The exhibition is just the corner around. D. The corner exhibition is just the around. Question 10: go/ you/ How often/ to/ do/ cinema? A. How often do you the cinema go to? B. How often do you go to the cinema? C. How often you do go the cinema to? D. How often cinema do you go to the? Đề bài: Rewrite sentences without changing the meaning Question 11: The polluted water results in the death of many aquatic animals and plants. A. The polluted water causes in the death of many aquatic animals and plants. B. The polluted water leads to the death of many aquatic animals and plants. C. The polluted water causes to the death of many aquatic animals and plants. D. The polluted water leads in the death of many aquatic animals and plants. Question 12: People use a lot of vehicles. The air is polluted. A. If people don’t use too many vehicles, the air won’t be polluted. B. If people won’t use too many vehicles, the air don’t be polluted. C. If people wouldn’t use too many vehicles, the air didn’t be polluted. D. If people didn’t use too many vehicles, the air wouldn’t be polluted. Question 13: My house is bigger than your house. A. Your house is not as big as my house. B. My house is the biggest. C. It’s bigger than my house to your house. D. Your house is not smaller than my house. Question 14: The last time I saw him was five years ago. A. I haven’t seen him for five years. B. It’s five years since the last time I saw him. C. Five years is the time we are away from each other. D. All are correct Question 15: The film is not exciting enough for me to see. A. The film is not boring enough for me to see. B. The film is so exciting that I don’t want to see. C. The film is too boring for me to see. D. The film is such an exciting one that I don’t want to see.
1
26 tháng 3 2020

Thế này ai đọc đc!!!batngo

26 tháng 3 2020

Mk chỉnh rr mà nó bị j á, bạn chọn a,b,c,d á

Give the correct form of the words given to complete the sentences. 1.The ______________ of lakes, rivers, oceans or underwater CONTAMINATE water pollution. 2. The street doesn’t look_____________ because it has a lot of rubbish.ATTRACT 3. The music club made so much noise that the__________ complained to REDIDE its owner. 4. Are all types of pollution__________ to the health of humans and animals? HARM 5. The_____________ are concerned about the oil spills in East Sea. ENVIROMENT 6. Dumping...
Đọc tiếp

Give the correct form of the words given to complete the sentences.
1.The ______________ of lakes, rivers, oceans or underwater CONTAMINATE
water pollution.
2. The street doesn’t look_____________ because it has a lot of rubbish.ATTRACT
3. The music club made so much noise that the__________ complained to REDIDE
its owner.
4. Are all types of pollution__________ to the health of humans and animals? HARM
5. The_____________ are concerned about the oil spills in East Sea. ENVIROMENT
6. Dumping ___________waste into the lakes and rivers has caused INDUSTRY
Serious water pollution.
7. Many people in this area have cholera because they drink _________water. TREAT
8.Examples of primary________________are exhaust fumes from cars, POLLUTE
soot from smoke and ash from volcanic eruption.
9. If we use water____________ , more people will have fresh water. CARE
10. The polluted water results in the _________of many aquatic animals DIE
And plants.
III. Combine the sentences in each pair into a new sentence that shows a cause/effect relationship. Use the words in brackets.
1.Many rivers and lakes are poisoned. Factories produce waste and pour it into rivers and lakes. (because)
___________________________________________________________________
2. The environment is polluted. Birds leave their habitats and plants die. (make)
___________________________________________________________________
3. Plastic bags are a major source of waste. We should not throw plastic bags everywhere. (so).
___________________________________________________________________
4. The food is contaminated. People’s health is poor. (results in)
___________________________________________________________________
5. Factories release fumes. The air breathe gets polluted. (due to)
___________________________________________________________________
IV. Combine each pair of sentences to form a conditional sentence, using “if” Type 2.
1.The factory is located near our village. There is air pollution and noise pollution.
___________________________________________________________________
2. The local people have to use water from the polluted river. They don’t have fresh water.
___________________________________________________________________
3. Trees and grasses cannot grow here. The soil is badly polluted.
___________________________________________________________________
4. Mr Quang works in a noisy environment. His hearing becomes worse.
___________________________________________________________________

5
31 tháng 12 2017

Give the correct form of the words given to complete the sentences.
1.The _______contaminaion_______ of lakes, rivers, oceans or underwater CONTAMINATE
water pollution.
2. The street doesn’t look_______attractive______ because it has a lot of rubbish.ATTRACT
3. The music club made so much noise that the_____residents_____ complained to REDIDE
its owner.
4. Are all types of pollution_____harmful_____ to the health of humans and animals? HARM
5. The______environmentalists_______ are concerned about the oil spills in East Sea. ENVIROMENT
6. Dumping ______industrial_____waste into the lakes and rivers has caused INDUSTRY
Serious water pollution.
7. Many people in this area have cholera because they drink ____untreated_____water. TREAT
8.Examples of primary________pollutants________are exhaust fumes from cars, POLLUTE
soot from smoke and ash from volcanic eruption.
9. If we use water______carefully______ , more people will have fresh water. CARE
10. The polluted water results in the ____death_____of many aquatic animals DIE
And plants.
III. Combine the sentences in each pair into a new sentence that shows a cause/effect relationship. Use the words in brackets.
1.Many rivers and lakes are poisoned. Factories produce waste and pour it into rivers and lakes. (because)
-> Because factories produce waste and pour it into rivers and lakes, many rivers and lakes are poisoned.
2. The environment is polluted. Birds leave their habitats and plants die. (make)
-> The pollution of the environment makes birds leave their habitats and plants die.
3. Plastic bags are a major source of waste. We should not throw plastic bags everywhere. (so).
-> Plastic bags are a major source of waste so we should not throw plastic bags everywhere.
4. The food is contaminated. People’s health is poor. (results in)
-> The contamination of the food results in people's poor health.
5. Factories release fumes. The air breathe gets polluted. (due to)
-> The air breathe gets polluted due to the release of fumes from factories.
IV. Combine each pair of sentences to form a conditional sentence, using “if” Type 2.
1.The factory is located near our village. There is air pollution and noise pollution.
-> If the factory weren't located near our village, there wouldn't be air pollution and noise pollution.
2. The local people have to use water from the polluted river. They don’t have fresh water.
-> If the local people had fresh water, they wouldn't have to use water from the polluted river.
3. Trees and grasses cannot grow here. The soil is badly polluted.
-> If the soil weren't badly polluted, trees and grass could grow here.
4. Mr Quang works in a noisy environment. His hearing becomes worse.
-> If Mr Quang didn't work in a noisy environment, his hearing wouldn't become worse.

30 tháng 12 2017

Give the correct form of the words given to complete the sentences.
1.The _______contaminaion_______ of lakes, rivers, oceans or underwater CONTAMINATE
water pollution.
2. The street doesn’t look_______attractive______ because it has a lot of rubbish.ATTRACT
3. The music club made so much noise that the_____residents_____ complained to REDIDE
its owner.
4. Are all types of pollution_____harmful_____ to the health of humans and animals? HARM
5. The______environmentalists_______ are concerned about the oil spills in East Sea. ENVIROMENT
6. Dumping ______industrial_____waste into the lakes and rivers has caused INDUSTRY
Serious water pollution.
7. Many people in this area have cholera because they drink ____untreated_____water. TREAT
8.Examples of primary________pollutants________are exhaust fumes from cars, POLLUTE
soot from smoke and ash from volcanic eruption.
9. If we use water______carefully______ , more people will have fresh water. CARE
10. The polluted water results in the ____death_____of many aquatic animals DIE
And plants.
III. Combine the sentences in each pair into a new sentence that shows a cause/effect relationship. Use the words in brackets.
1.Many rivers and lakes are poisoned. Factories produce waste and pour it into rivers and lakes. (because)
-> Because factories produce waste and pour it into rivers and lakes, many rivers and lakes are poisoned.
2. The environment is polluted. Birds leave their habitats and plants die. (make)
-> The pollution of the environment makes birds leave their habitats and plants die.
3. Plastic bags are a major source of waste. We should not throw plastic bags everywhere. (so).
-> Plastic bags are a major source of waste so we should not throw plastic bags everywhere.
4. The food is contaminated. People’s health is poor. (results in)
-> The contamination of the food results in people's poor health.
5. Factories release fumes. The air breathe gets polluted. (due to)
-> The air breathe gets polluted due to the release of fumes from factories.
IV. Combine each pair of sentences to form a conditional sentence, using “if” Type 2.
1.The factory is located near our village. There is air pollution and noise pollution.
-> If the factory weren't located near our village, there wouldn't be air pollution and noise pollution.
2. The local people have to use water from the polluted river. They don’t have fresh water.
-> If the local people had fresh water, they wouldn't have to use water from the polluted river.
3. Trees and grasses cannot grow here. The soil is badly polluted.
-> If the soil weren't badly polluted, trees and grass could grow here.
4. Mr Quang works in a noisy environment. His hearing becomes worse.
-> If Mr Quang didn't work in a noisy environment, his hearing wouldn't become worse.

18 tháng 8 2023

1. pollution
2. dangerous
3. air pollution
4. coal
5. other sources

18 tháng 8 2023

1. pollution
2. dangerous
3. air pollution
4. coal
5. other sources