33. There is a new problem involved in the popularity of private cars ____ road conditions need to be improved.

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

32. The Opening Ceremony of the 29^th Olympic Games is a great success, ____ that has surprised the world.

A. it 　　　　　　　　　　　 B. one　　　　　　 　 C. the one　　　　　 　 D. which

31. Thank you for all your hard work last week. I don’t think we ____ it without you.　　

A. can manage　 　　 B. could have managed　 C. could manage　　 　 D. can have managed

30. After walking for ten minutes, she suddenly realized that she ____ in the wrong direction.

A. was walking　 　 B. has been walking 　　 C. had been walking　 　 D. walked

29. ____ she is not so healthy ____ she used to be?

A. How is it that; as　 B. Why is it that; what　 C. Is it why; that 　　　 D. How it is that; as

28. ____ sales down by 30%, the company has to lay off many clerks.　　　　 　

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

27. At length, we found ourselves in a pleasant park with trees providing shade and ____ down to eat our picnic lunch.

A. sitting　　　　 　 B. sat　　　　　　　 　 C. to sit　　　　 　　　　 D. having sat

26. We hope that the measures to control the stock market, ____ are taken by the government, will work.

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

25. -Mr. Smith, I can’t go on with my reading.

-I’ve already told you the last three parts of the article ____ the most difficult to understand.

A. is　　　　　　 　 B. are　　　　　　　 　 C. had been　　　 　　　 D. were

24. Keep up a good state of mind even if you ____ fail plenty of times.

A. must　　　　　 　 B. will　　　　　　　 　 C. can　　　　　 　　　 D. should