31. “QQ Happy Farm is a resource management game based on farms on the Internet, ______ players act as owners of the farms.

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

30. None of us expected the chairman to _____ at the party. We thought he was still in hospital.

　 A. turn in　　　 B. turn over　　　 C. turn up　　　 D. turn down

29. – Why didn’t you tell her about the appointment?

　 - She drove away ______ we could say a word.

　 A. before　　　　 B. until　　　　 C. when　　　 D. after

28. The open-air ______has been put off because of the bad weather.

　 A. occasion　　　 B. congratulation　　　　 C. celebration　　　 D. challenge

27. As we expect, ______ 2010 World Expo in Shanghai is ______ great success.

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

26. After the adjustment of financial policies, many citizens put up posts, 90 percent _____ carried the message of approval.

　 A. of which　　　 B. whom　　　　 C. of them　　　 D. of whom

25. If the building project to be completed by the end of this month ______, the construction company will be fined.

　 A. delayed　　　　 B. will be delayed　　 　C. is delayed　　　 D. will delay

24. Only when the manager comes______ to settle the problem.

　 A. it will be possible　　　　 B. will it be possible

　 C. it is possible　　　　　　 D. is it possible

23. Visiting doctors often are ______ necessary for old people.

　 A. naturally　　　 B. basically　　　 C. extremely　　　 D. separately

22. He tried his best to sole the problem, _____ difficult it was.

　 A. however　　 　B. no matter　　　 C. whatever　　　 D. how