31. His children are well-behaved, _____ those of his sister are naughty． A. as　　　　 B. although　　　 C. while　　　　 D．when

30. -why don’t we choose that road to save time?

-The bridge to it　　　　 　

A. has repaired　　 B. is repaired　　 C. is being repaired 　D. will be repaired

29. As she loved animals so much, she found a job as __ animal trainer after leaving ___ college． A．an; / 　　　 B．an; the 　　 　C．the; the 　　　 D．the; /

28. Facts prove that the world’s economic development is not a win-lose game but one in which all ____ be winners．

　A．shall　　 　　　 B．can　　 C．must　　　 D．would

27. _______ many times, but he still couldn't understand it.

A. Though he had been told 　B. Having been told　 C. Having told 　D. He had been told　　　 　　　　　　　　　 　

26. -How about your journey to Mount Emei?

-Everything was wonderful except that our car　　　　 twice on the way.

A. slowed down　　　 B. broke down　　 C. got down　　 D. put down

25. They also said her work was equal to ____ of a student who had completed four years of college． A．it　　　　 B．that　　　 C．this　　　　　 D．one

24. - ＄1,500, but that’s my last offer.

- OK. It’s a ____.

A. cost　　　　 B. price　　 C. reward　　 D. deal

23. We______ the last bus and didn't have any money for taxi, so we had to walk home.

A. reached　　 B. lost　　　　 C. missed　　　　 D. caught

22. He told us whether　　　　 a picnic was still under discussion.

A. to have　　 B. having　　　　 C. have　　 D. had