31. Jack asked his brother　　　 Betty.

A. did he know 　 B. if he knows　　　 C. does he know　　 D. whether he knew

30. I have heard from my father,　　 is in American.

A. which　　　　 　 B. that　　　　 　 C. from whom　　　 　　　　　　　 D. who

29. Swan Lake is a famous ballet(芭蕾) in four acts, ________ on a German fairy tale.

A. basing　　　 　 B. based　　　　 　 C. bases　　　　　 D. to base

28. He had no idea of how the climb would be _______ he was half way up the mountain.

A. when　　　　 　 B. until　　　　 C. while　　　　　 D. as

27. -Would you like some more chicken?

-No, thanks. I am ______ a diet and try to ______weight.

A. on; lose　　　 B. on; put on　　 C. in; have　　　　 D. in; lose

26. Alien had to call a taxi because the box was _____ to carry all the way home.

A. much too heavy　　　　　　　　　 B. too much heavy 　　　　　　　

C. heavy too much　　　　　　　　　 D. too heavy much

25. ___ more and more forests destroyed, some animals are facing the danger of dying out.

A. As　　　　　　 B. By　　　　　　 C. For　　　　　　 D. With

24. -People are never ____ with what they have. They always want something more or something different.

-No, that’s not my case. What I have has ____ me.

A. satisfied; exciting　　　　 B. satisfied; excited　

C. satisfying; exciting 　　　　　D. satisfying; excited

23. The expert________children not too often to go to McDonald’s or KFC.

A. suggests　 B. advises　 C. allows　 D. offers

22. A new house at the corner of the road ____ for years.

A. was built　　　 B. has been built C. was been built D. has had being built