14. You will get a good seat if you                first.

      A. come                       B. came                       C. have come              D. will come

15. We’ll be late unless we                  now.

      A. leave                       B. don’t leave             C. had left                   D. have left

16. We can reuse                     .

      A. water                      B. air                           C. noise                       D. bottles

17. What does “reduce” mean?

      A. using something again                                B. using something more

      C. using something less                                   D. collect something

18. What does “reuse” mean?

      A. using something again                                B. using something more

      C. using something less                                   D. collect something

19. We shouldn’t                     rubbish on the street.

      A. throw                      B. reuse                       C. wrap                       D. turn off

20. Polluted water can make fish                    .

      A. live                         B. sleep                       C. grow                       D. die

21. We can use empty                          to make pencil boxes.

      A. paper                      B. bottles                     C. bulbs                       D. plastic bag

22. Turn                        the lights when we go out.

      A. of                            B. off                          C. on                           D. up

23. People should stop using so                       energy.

      A. more                       B. less                          C. many                       D. much

24. Planting more                     to reduce pollution.

      A. does                        B. flowers                   C. trees                        D. grass

25.                   means giving things to people in need.

      A. Swap                      B. Charity                   C. Reuse                      D. Recycle

III. Identify the one underlined word or phrase that must be changed to make the sentence correct.

1.   If someone came into the store, smile and say, “May I help you?”

      A                    B                                C                     D

2.   If you try these cosmetics, you look five years younger.

      A         B                                       C                          D

3.   If you do not understand what were written in the book, you could ask Mr. Pike.

      A                     B                                 C                                             D

4.   I will come to meet Mr. Pike and tell him about your problems if you didn’t solve them

               A                                                            B                             C                 D

      yourself.

5.   Sam will not graduate unless he doesn’t pass all the tests.

                    A                          B                  C               D

6.   If there isn’t enough food, we couldn’t continue our journey.

      A                    B            C                       D

7.   Unless you pour oil on water, it will float.

           A               B         C                       D

8.   You have to take a taxi home if you want to leave now.

                 A        B                          C                    D

9.   If anyone will phone, tell them I’ll be back at 11:00.

      A                       B         C               D

10. We can hire a minibus if there will be enough people.

                  A               B         C           D

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