6.   …………air is one of the many problems we have to solve.

      A. Pure                               B. polluted                         C. Dust                               D. Pleasant

7.   I’m disappointed…………people have spoiled this area.

      A. that                                B. when                             C. if                                     D. how

8.   The baby laughed ……….. when her mother told her a funny story.

      A. happy                            B. happiness                       C. unhappy                         D. happily

9.   The boy ……….put up the Christmas decoration is my brother. 

      A. who                               B. that                                C. whom                            D. A & B

10. Ba really wants to buy new tables and chairs. ………… , new furniture is too expensive.

      A. However                       B. But                                C. Therefore                       D. So

11. We arranged to meet her last night but she didn’t turn………… ?

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

12. I suggest ………… some money for poor children.

       A. raise                              B. to raise                           C. raised                             D. raising

13. We are considering……………….to Hawai.

       A. to go                              B. going                               C. go                                  D. be going

14. ………….. he studies hard, he won’t pass his exam.

       A. Unless               B. If                                     C. Although                       D. Because

15. He said that he ___________ some flowers in the garden at that moment.

A. is watering                 B. was watering              C. watered           D. will water

16. They like Asian food _______ is sold in that market. 

            A. Who                         B. which                       C. where.                      D. whose

6. New York, _______ population reached 10 million by 1930, was the world’s first megacity.

       A. whose                        B. which                               C. where                           D. when

7. Besides Spanish, her _______ tongue, she can also speak Portuguese and English.

       A. accient                       B. foreign                              C. first                              D. mother

8. If I _______ you, I _______  use English more often in order not to be rusty.

       A. were/ will                   B. was/ won’t                        C. were/ would                 D.were/ wouldn’t

9. Son Doong Cave _______ in 1991 by a local man named Ho Khanh.

       A. found                        B. was found                         C. find                              D. finds

10. I have _________ older brother and ____ younger sister.

       A. an...a                         B. an... an                             C. a... a                             D. a... an

11.  You ________ feel more energized if you reduce your salt intake.

       A. should                       B. may                                  C. must                             D. would

12.  A: Is there some butter I could use?       B: No, there isn’t ________ butter, but some margarine.

       A. some                          B. any                                   C. little                             D. few

13.  Recipes tell me to add one or two ________ of celery to a soup or stew.

       A. cloves                        B. slices                                C. bunches                       D. Sticks
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