III. Find one mistake in each of the following sentences.

1. Although having an old car, he didn’t sell it to get money.

A. Although                B. an                            C. sell                          D. to get

2. We won’t have enough fresh air if we will keep cutting down trees.

A. won’t have             B. fresh air                  C. will keep                 D. cutting

3. He has worked in this restaurant for four months ago.

A. has worked             B. this                          C. for                           D. ago

4. English teaches to everyone at different ages in this center.

A. teaches                   B. everyone                 C. different ages         D. this center

5. By the time the policemen had come, the situation had become more serious.

A. By the time             B. had come                C. had become            D. more

6. Soil polluted is due to the overuse of pesticides and herbicides of farmers.

A. Soil polluted           B. due to                     C. and                         D. of farmers

7. We have to be aware for the consequences of climate change.

A. have to                   B. for                        C. the consequences    D. climate change

20. The festival ________ thousands of tourists from all over the world.

A. attractive                B. attracts                    C. attractions               D. attracting

21. The government will provide the poor ________ more comfortable accommodation.

A. with                        B. for                           C. to                            D. in

22. Carl ________ home before we arrived.

A. is going                   B. will go                    C. has gone                 D. had gone

23. After he ________ everything clearly, we started our work.

A. had explained         B. explains                  C. has explained          D. explained

24. My father’s coffee ________ by the waitress.

A. has prepared           B. had prepared      C. prepared  D. has been prepared

25. The houses ________ by the volunteers tomorrow.

A. will paint                B. will being paint      C. will be painted      D. will painted

26. When they got home last night, someone ________ into their house.

A. had broken             B. broken                    C. has broken              D. broke

27. Many people were ________ in the burning building.

A. trap                         B. trapping                  C. trapped             D. be trapped

28. The project has been set up to help ________ people.

A. homemade              B. homeless                 C. houseful          D. household

29. How many languages ________ in Singapore?

A. is spoken                B. are spoken              C. spoken                D. will speak

30. My dogs ________ care of by my neighbours for a week.

A. were taken              B. have been taken      C. have taken          D. will take

11. ________ the chemical waste from factories, people don’t have clean water to use.

A. Although                B. After                       C. Because                  D. Due to

12. If we don’t hurry, we ________ the flight.

A. will miss                 B. miss                        C. are missing              D. would miss

13. I ________ sushi before.

A. didn’t try                B. am not trying          C. won’t try                 D. haven’t tried

14. Alex have known me ________ many years.

A. since                       B. when                       C. for                           D. in

15. England, Scotland, Wales, and Northern Ireland ________ the UK.

A. forms                      B. formed                    C. will form                D. form

16. Peter has played the violin ________ he was a student.

A. for                          B. since                       C. while                       D. when

17. Hoan Kiem Lake is a ________ of Hanoi.

A. statue                      B. symbol                    C. image                      D. monument

18. At present, they ________ to Milan to attend a fashion show.

A. are travelling          B. will travel               C. have travelled         D. travel

19. Our school year ________ next month, on May 31^st.

A. end                         B. will end                  C. ends                      D. is ending

20. The festival ________ thousands of tourists from all over the world.

II. Choose the best answer A, B, C or D to complete the following sentences.

1. If I ________ you, I would look for a new flat to buy.

A. am                          B. will be                    C. were                        D. was

2. You ________ so tired if you went to bed early.

A. wouldn’t be            B. won’t be                 C. will be                    D. were

3. If you really ________ about me, you could call me.

A. will care                  B. have cared              C. would care              D. cared

4. We can’t remove all ________ from water in this river.

A. contaminate            B. contaminants          C. contaminated          D. contamination

5. ________ gas from factories has polluted the air.

A. poisonous               B. poison                     C. poisoned                 D. poisoning

6. The acid rain has caused the ________ to the trees in this area.

A. dead                       B. die                          C. dying                      D. death

7. I had to clean the floor ________ I spilled my juice.

A. because of              B. since                       C. despite                    D. due to

8. She walked slowly ________ she had to carry heavy bags.

A. although                 B. if                             C. because of              D. because

9. I can hear you clearly ________ your loud voice.

A. since                       B. as                            C. because of              D. when

10. Eating too much sugar leads ________ diabetes.

A. in                            B. with                        C. for                           D. to