Choose the best option to complete each of the following sentences.

1. Can you turn ________the light? -It’s too dark.

A. on                    B. off                    C. in                      D. for

2. I suggest ________showers instead of taking bath.

A. take                  B. taking                C. to take                        D. to taking

3. - What are you looking ________? - My picture book. I’ve lost it.

A. on                    B. off                    C. in                      D. for

4. A new air-conditioner will be ________tomorrow morning.

A. to intall             B. installed            C. installing           D. install

5. Scientists are looking for an ________way to reduce energy consumption.

A. effect                         B. effection           C. effective            D. effectively

6. They are completely short of water now. A number of people have died because of this ________.

A. shortage            B. short                 C. shorten             D. shortly

7. If you want to save money, you should ________the amount of water your family uses.

A. increase            B. reduce                        C. adapt                           D. repair

8. In order to save electricity, an ordinary 100-watt light bulb can be replaced by a(n) ________.

A. energy-saving bulb        B. energy-save bulb

C. saving energy bulb        D. save-energy bulb

9. You should get a (n)________to make sure there are no cracks in the pipes.

A. plumber            B. mechanic          C. electrician         D. consumer

10. ________take the train instead of the bus? It’s faster and cheaper.

A. Why not           B. Why don’t        C. How about        D. Let’s

11. If we ________less paper, we ________the number of trees in the forests.

A. used/ will save     B. use/ can save     C. can use/ save     D. use/ can

12. She won’t take all the suitcases ________she likes to travel light.

A. so                     B. but                             C. because                      D. therefore

13. She is very tired; ________, she has to finish her homework.

A. moreover          B. so                     C. and                                      D. however

14. - Is he an actor ________a singer? - An actor

A. and                   B. or                     C. with                            D. so

15. He was tired, ________he took a rest before continuing the work.

A. so                     B. and                   C. but                             D. if

16. Who looks ________your children when you are away from home?

A. for                    B. at                      C. after                                     D. to

17. Why doesn’t she go ________with her university study?

A. in                      B. at                      C. to                               D. on

18. After coming home, she cleaned the floor ________cooked dinner.

A. but                   B. however            C. moreober                   D. and

19. They didn’t understand the matter ________she didn’t ask for help.

A. but                   B. however            C. moreover                    D. and

20. How about ________posters on energy saving and hanging them around our school?

A. make                B. making              C. to make                      D. to making

Give the correct form of the verbs in brackets.

21. I suggest ________________some money. (collect)

22. What about ________________a shower instead of a bath to save energy. (take)

23. I think we should ________________off the faucets. (turn)

24. If we plant more trees along the streets, we ________________more shade and fresh air. (have)

25. If the pollution _____________on, the world will end up like a second-hand junk-yard. (go)

Filling each gap with a suitable phrasal verb in the box.

turn on – turn off – look for – look after – go on – look forward to – put off

26. Mai can’t go to the movies with us tonight. She will have to ________her little sister.

27. If we ________wasting water, there will be a shortage of fresh water in a few decades.

28. “________the TV, will you? I want to watch the weather forecast.”

29. “ I think I’ve lost my new pen. I’ve ________it eveywhere.

30. Yen forgot to ________the faucets when she letf home for work.

31. I am ________hearing from you.

32. Never ________till tomorrow what you can do today.

Match a word or phrase in column A with a definition in column B.

33. plumber                         A. switch off

34. energy                           B. of or using the sun  

35. solar                              C. a person whose job is to fix and repair things like water pipes

36. innovation                       D. the power from electricity, gas, coal, ect that is used to make things work

37. enormous                       E. a new idea, method

38. turn off                            F. very big or very large.

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