Choose the best answer:

11. . …..……........bad traffic, we arrived on time.

A. Because                               B. Although                 C. Despite                    D. However

12. Water ............... of  hydrogen and oxygen .

   A. consist                  B. consists                                C. consisted                 D. have consisted

14. Many people still refused to believe that smoking ............ dangerous.

   A. be                         B. is                                         C . are                          D. been

15. Living in the city is getting ..................

  A. more expensive and expensive                 B. more expensive and more expensive

  C.  expensive and expensive                         D. more and more expensive

16. He spends ................... time on his work.

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

20. We avoid ............... our environment.

A. polluted                               B. polluting                              C. pollute                                 D. to pollute

24. They ................. me if they knew my address.

 A. will visit                              B. would visit                           C. would have visited                D. visit

22. The larger the apartment is , the ................ the rent is .

A. expensive                            B. expensively                          C. more expensive                    D. most expensive

21.If you hate cleaning this fish, why don’t you ............. it cleaned at the fishmonger’s.

A. make                                   B. ask                                       C. order                                    D. have

22. . How has Vietnam ____ since Doimoi?

A. change                               B. changed                                C. changes                               D. changing

23. The girl ____ is now in hospital.

A. who injured in the accident B. was injured in the accident

C. who was injured in the accident                                          D. whom he injured

24. My parents are the first people____ advice I usually ask for.

A. what                                  B. which               C. who              D. whose