1.Everyone would like to live in an____ world with clean air and clear water. a)polluted b)unpolluted c)pollute
2.My niece has taken __collection stamps lately. a)in b) down c)up
3.Ann couldnt choose ___two blouses . a)between b)among c)opposite
4.Governments _____ make laws to protect the environment. a)mustnt b)can`t c)must
5. What____ problems does she want to study? a)ecological b) ecologist c)ecology
6.Her story didn't sound true, we___all it. a)disbelieve b)believe c)agreement
7.Jim__to become a journalist since he __school. a)have always wanted, finished b)has always been wanting, has finished c)has always wanted, finished
8._____ is a science which studies how plants, animals and human beings live together and influence each other.
a)ecological b) ecologist c)ecology
9.Boys and girls! Behave __ while I am away! a)good b)yourselves c)yourself
10. We have ___ time left before the film starts. Hurry up! a)few b)little c) a little
11. My elder brother had a great ___ on me. a) responsible b)development c)influence
12. __ the animals that are endangered in the Amazon rainforest now are the jaguar, gorilla, and some others. a)between b)in c)among

13.My classmates are responsible _____ planting flowers in the school flowerbeds. a) after b)about c)for
14.Old things that we throw away are ____ . a)waste b)extinct c)endangered
15.Air, soil and water pollution can _____ the ecology of our planet. a) damage b) protect c)save
16.Why are you breathing so fast? I _____ . a) have run b)am running c)have been running
17. Some endangered species of animals and plants can __ from our planet if we dont protect them. a) appear b)appearance c)disappear
18. How long __ it usually ____ to get from Moscow to Vladivostok by train? a)did ..... take b) does ... take c)will ...... take
19.Dont hide _____behind the bench. I can see you. a) yourself b) —-— c) myself
20. People think that recycling paper can help ___ . a)to save water b) to save a lot of energy c)to save forests
21.Jane is a clever girl but sometimes she says stupid things. I can`t take _ it. a) off b)in c) up
22. Mr. Robinson ____ a member of Greenpeace for ten years. He saves endangered animals. a)has been b)has been being c) was
23. ____ is a place usually outside a town where people collect waste. a) A dump b) nature c) A habitat
24.The eucalyptus grows faster than any other tree: it __about one year to grow 10.5 metres tall. a)takes b) take c) took

Ответ:

1. Everyone would like to live in an____ world with clean air and clear water.

b) unpolluted (=незагрязнённый, это синоним слова clean)

2. My niece has taken __ collection stamps lately.

c) up (to take = увлечься)

3. Ann couldnt choose ___ two blouses .

a) between (речь о выборе между двух предметов, поэтому используется предлог between)

4. Governments _____ make laws to protect the environment.

c) must (по смыслу подходит только этот глагол: правительство должно принять законы по защите окруж. среды)

5. What____ problems does she want to study?

a) ecological (в вопросе пропущено прилагательное)

6. Her story didn't sound true, we___ all it.

a) disbelieve (мы не верим)

7. Jim __ to become a journalist since he __ school.

c) has always wanted, finished (в придаточной части нужен глагол в Past Simple - это указание на прошлое, а в главной речь о периоде с прошлого по настоящее - это Present Perfect)

8. _____ is a science which studies how plants, animals and human beings live together and influence each other.

c) ecology (в предложении пропущено именно существительное)

9. Boys and girls! Behave __ while I am away!

b) yourselves (behave oneself = вести себя прилично, используем форму множ. числа, потому что в обращении сущ. во множ. ч.)

10. We have ___ time left before the film starts. Hurry up!

b) little (у нас мало времени. Time - неисчисляемое сущ., поэтому пишем little)

11. My elder brother had a great ___ on me.

c) influence (= влияние. Пропущено существительное)

12. __ the animals that are endangered in the Amazon rainforest now are the jaguar, gorilla, and some others.

c) among (=среди множества животных, а не среди двух)

13. My classmates are responsible _____ planting flowers in the school flowerbeds.

 c) for (responsible for = ответственный за -  это сочетание нужно запомнить)

14. Old things that we throw away are ____ .

a) waste (отходы)

15. Air, soil and water pollution can _____ the ecology of our planet.

a) damage (вредить, наносить ущерб)

16. Why are you breathing so fast? I _____ .

c) have been running (длительное действие завершилось к настоящему моменту и виден результат = Present Perfect Continuous)

17. Some endangered species of animals and plants can __ from our planet if we dont protect them. a

c) disappear (= исчезнуть)

18. How long __ it usually ____ to get from Moscow to Vladivostok by train?

b) does ... take (вопрос о факте, являющимся истинным/постоянным)

19. Dont hide _____behind the bench. I can see you.

a) yourself (Don't hide yourself = Не прячься. Местоимение yourself соответствует русскому постфиксу -ся)

20. People think that recycling paper can help ___ .

c) to save forests (потому что бумага делается из древесины)

21. Jane is a clever girl but sometimes she says stupid things. I can't take _ it.

b) in (take in = понять)

22. Mr. Robinson ____ a member of Greenpeace for ten years. He saves endangered animals.

a) has been (речь о действии, протекающем уже 10 лет - Present perfect)

23. ____ is a place usually outside a town where people collect waste.

a) A dump (= свалка)

24. The eucalyptus grows faster than any other tree: it __ about one year to grow 10.5 metres tall.

a) takes (Present Simple, потому что это научный факт)

Объяснение:

Объяснение приведено после каждого пункта