31.I _____ in New York for two years, but I’ve never regretted my final decision to move back to China.

A. was working 　　　　　　　 B. have worked 　　　　　 C. worked　 　　　　　　　 D. had worked

30. I think it’s the driver rather than the passengers who______ for the accident.

A. is to blame　 　　　 B. are to blame　 　　　　　 C. are to be blamed　 　　 D. should blame.

29.The weather turned out to be fine yesterday. I _____　 the trouble to carry my umbrella.

A. should have taken　 　　　　　　 B. needn’t have taken　

C. could have taken 　　　　　　　　 D. mustn’t have taken

28._____ more and more forests were destroyed, some animals are facing the danger of dying out.

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

27. Sports and games can _____ our bodies, keep us healthy and help us live a long life.

A. build up　 　　　　　　 B. set up　 　　　　　　　　　 C. put up　 　　　　　　　　　 D. bring up

26._______achievement, last week’s ministerial meetings of the WTO have earned a low, though not failing, grade.

A. In face of　 　　　　　 B. In case of　 　　　　　　 C. As a result of 　　　　　 D. In terms of

25. Although my grandfather is in his eighties, he is still as _____ as a young man and hates sitting around doing nothing all day.

A. enthusiastic 　　　　 B. intelligent 　　　　　　　　 C. energetic 　　　　　　　　 D. sensitive

24.----What’s the area and population of the US？

　----The US is about the same size as China, but its population is five times ______.

A. smaller　 　　　　　　　 B as little.　 　　　　　　　　　 C. as few　 　　　　　　　　 D. bigger.

23. Be careful when you cross this very busy street. If not, you may ____ run over by a car.

A. have 　　　　　　　　　 B. become　 　　　　　　　　 C. get　　 　　　　　　　　　 D. turn

22. People think that ______ opening ceremony of the 29^th Olympic Games is _____ great success.

A. an; a 　　　　　　　　　 B. the ; a 　　　　　　　　　　 C. the ;the　 　　　　　　　　 D. the ; /