20. ______ by a greater demand of vegetables, farmers have built more green houses.　　　　　　　　

　 A. Driven　　 B. Being driven　　　 C. To drive　　　 D. Having driven

19. The open-air celebration has been put off _______ the bad weather.　

　 A. in case of　　　 B. in spite of　　　　　 C. instead of　　　　 D. because of

18. The play had already been on for quite some time when we ____ at the New Theatre.

　 A. have arrived　　 B. arrived　　　 C. had arrived　　　 D. arrive 　

17. Professor James will give us a lecture on the Western culture, but when and where ____ yet.

　 A. hasn’t been decided　　 B. haven’t decided 　

C. isn’t being decided　　　 D. aren’t decided

16. --- He got his first book published. It turned out to be a bestseller.

　 --- When was _____?

　 --- _____ was in 2000 when he was still in college.

　 A. that; This　　　　 B. this; It　　　　 C. it; This　　　　 D. that; It

15. --- My cat’s really fat.

　 --- You ______ have given her so much food.

　 A. wouldn’t　　　　 B. couldn’t　　　　 C. shouldn’t　　　　 D. mustn’t

14. Chan’s restaurant on Baker Street, ______ used to be poorly run, is now a successful business.

　 A. that　　　　　 B. which　　　　　　 C. who　　　　　 D. where

13. Would you please ______ this form for me to see if I’ve filled it in right?　

　 A. take off　　　 B. look after　　　 C. give up　　　　 D. go over

12. Of the seven days in a week, Saturday is said to be the most popular ____ for a wedding in some countries.

　 A. way　　　 B. situation　　　　 C. event　　　　 D. choice 　

11. We firmly believe that war never settles anything. It only _____ violence.

　 A. runs into　　 　　B. comes from　　　 　C. leads to　　　 　　D. begins with