11. In an age of fuel shortage, green cars are obviously ______ superior ______ the cars that run on petrol.

A. more; than                                                   B. more; to

C. /; than                                                         D. /; to

12. In the apartment building lives a(n) ______ lawyer, who is working on a bribery case.

A. American brilliant young                                B. young brilliant American

C. brilliant young American                                D. brilliant American young

13. The boy took a look ______ his watch and knew his girl friend was late again.

A. above                                       B. into                             

C. at                                        D. over

14. The singer receives an occasional letter from the young fan ______ he has set a good     example.

A. who                                        B. that    

C. for whom                                      D. to whom

15. Nobody can explain the reason ______ the project was abandoned two years ago and then renewed earlier this year.

A. by which                                       B. why

C. which                                        D. how

16. ______ you are young, you will be blessed with beauty, hope, cheer, courage and power.

A. So long as                                                   B. Although

C. In case                                          D. In that

17. I noticed there ______ a pen, two notebooks and a knife stained with blood. But they are gone!

A. be                                                              B. would be

C. was                                         D. were

18. Both air and water ______ what most creatures cannot live without.

A. is                                                                 B. are

C. was                                                             D. were

19. According to new data from the census bureau, one out of every four adults in Houston ______ have a high school diploma.

A. don’t                                                        B. doesn’t

C. haven’t                                         D. would not

20. We think of ______ as an international practice not to interfere with other countries’ internal affairs.

A. ourselves                                       B. that

C. /                                        D. it