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Frogs are amphibians, meaning that they can live both in and out of the water. All frogs lay their eggs in the water, and a female frog will lay thousands of eggs at a time. When the eggs hatch, (1)___babies__ come out are not frogs but rather tadpoles. Unlike frogs, tadpoles must spend all their time in the (2)___water__, being unable to breathe air at this point. Tadpoles also lack arms and legs, and have a tail which they (3)___disappear__ as they develop into frogs. Tadpoles are herbivours, which means that they only eat (4)__plants___. Specially, tadpoles eat algae, a water plant which can be harmful if there is too much of it. (5)___Therefore__, tadpoles are important to keep most ponds healthy.
As tadpoles develop into mature frogs, they develop the lungs which allow them to (6)___get___ air, and the arms and legs which allow them to move across (7)___ground __. At this point the mature frogs leave the ponds, (8)__so___ some species stay near the water for their entire lives. Mature frogs are carnivores, (9)__eating___ insects and small fish. Most frogs hunt using their long, sticky tongueto catch their prey. Some species of frogs have developed extremely strong poisons to defend (10)___themselves__ from their other animals.
* Change the following sentences from active into form.
1. Somebody has taken my briefcase.
my briefcase has been taken
2. The teacher returned our written work to us.
our written work were returned to us by the teacher
3. She had finished her report by soon.
her report had been finished by soon
4. The mad dog bit the little boy.
the little boy was bitten by the mad dog
5. The police have arrested five suspects.
five suspects have been arrested by the police
6. The doctor ordered him to take a long rest.
7. I will put your gloves back in the drawer.
your gloves will be put back in the drawer.
8. A group of students have met their friends at the rail way station.
their friends have been met at the rail way station by a group of students
9. They didn't allow Tom to take these books home.
Tom wasn't allowed to take these books home.
10. The teacher won't correct exercises tomorrow.
exercises won't be corrected by the teacher tomorrow
11. Marry has operated Tom since 10 o'clock.
Tom has been operated by Mary since 10 o'clock.
12. This is the second time they have written to us about this.
This is the second time we have been written to about this
13. Mr. Smith has taught us French for two year.
We have been taught French by Mr. Smith for two years
14. They didn't look after the children properly.
the children were not looked after properly.
15. Nobody swept this street last week.
this street wasn't swept last week
16. People drink a great deal of tea in England.
a great deal of tea is drunk in England.
17. People speak English all over the world.
E is spoken all over the world.
18. Tom was writing two poems.
two poems were being written by Tom
19. She often takes her dog for a walk.
her dog is often taken for a walk
20. They can't make tea with cold water.
Tea can't be made with cold water.
21.The chief engineer was instructing all the workers of the plan.
all the workers were being instructed of the plan by the chief engineer
22. Somebody has taken some of my book away.
some of my books have been taken away
23. They will hold the meeting before the May Day.
the meeting will be held before the May Day.
24. They have to repair the engine of the car.
the engine of the car has to be repaired
25. The boys broke the window and took away some pictures.
the window was broken and some pictures were taken away by the boys
26. People spend a lot of money on advertising every day.
A lot of money is spent on advertising every day.
27. They may use this room for the classroom.
this room may be used for the classroom.
28. The teacher is going to tell a story.
a story is going to be told by the teacher
29. Marry is cutting the cake with a sharp knife.
the cake is being cut with a sharp knife by Marry
30. People speak English in almost every corner of the World.
E is spoken in almost every corner of the World.
#Yumi
Trả lời nguyên 30 câu z mà hongg nổi 1 like, khổ thân CTV :3
- She’s so busy with…social.activities that she has no time for entertainment. (society)
- Every…success.in science helps you gain new knowledge. (succeed)
- Coke is a…mixture…of cola flavor, water carbon dioxide and sugar. (mix)
- Some experts say cycling is one of the…safest..form of exercise. (safety)
-. Is there any…necessity…to treat her so badly? ( necessary)
- After the hot summer, there was a…shortage..of water. (short)
- The…inheritance…will make him a rich man. (inherit)
- The…solution..to the questions are at the back of the book. (solve)
- I’ll give you three sweets in…exchanging .for an apple. (exchange)
- In some countries, black people do not have…equality..with white people. (equal)
- Can you imagine….life without electricity and other modern conveniences? (imagination)
-Mrs Tam has just bought a…valuable.object. It doesn’t cost even a pence. (value)\
- The United Nations…Organization.is an international one. (organize)
- Banks make loans to…borrowers..(borrow)
- Banks provide…service..which make it easier for us to pay bills and carry on business. (serve)
- The.monetary..unit in France was the Franc. (money)
- I’m worried about the…safeness of the children. (safe)
- What do you call the international….relations among countries.(nation)
- This restaurant is famous…for its western meals. (fame)
- They all passed their exams without the slightest..difficulty.(difficult)
- Applied scientists have electrified…our homes. (electrification)
- The.death..of a famous doctor was announced last night. (die)
- Don’t leave the lights on. It wasteselectricity…(electric)
- These countries are.Preferential..in imports of raw cotton. (prefer)
-. The..attraction.of the moon for the earth causes the tides. (attract)
- Weoccational…go out for dinner but we cook own meals most of the time. (occasion)
- Traveling a lot will broadcast…our minds. (broad)
- In some countries advertisement…has made young people buy things they don’t need. (advertise)
- I can say with.certainty..that you have made much progress in learning English. (certain)
- The company is very efficient and gives a..speech.service. (speed)
- You are veryintelligent…(intelligence)
- People must have.responsibility..for the air pollution. (responsible)
B. topsoil
Agricultural irrigation systems use topsoil as the source of water, providing essential nutrients and moisture to plants.
A water source may include rivers, underground aquifers, or man-made reservoirs, which are crucial for agricultural irrigation and maintaining healthy ecosystems.
The problem of soil erosion and its effects on water sources can arise when land-use practices do not consider the impact of such practices on soil health and water availability. This can be addressed through soil conservation measures and sustainable land-use planning.
Forest management can also play a role in addressing water conservation challenges, as well as providing valuable ecosystem services such as carbon sequestration and biodiversity preservation. The reforestation of degraded landscapes, as well as the promotion of sustainable forest management practices, can help mitigate the effects of water scarcity and promote water security for future generations.</s
D. aquatic
This term describes the habitat or conditions that involve living in, happening in, or being connected with water. Aquatic ecosystems are diverse and can be found in both marine and freshwater environments. Examples of aquatic organisms include fish, marine mammals, seabirds, and various aquatic plants.
1. are you doing => do you do
2.cooks ( thứ 2 ) => is cooking
3. is doing> does
4.were coming => came
5.Are you going to => will
6.is playing => plays
7. works => is working