31．A．sister’s 　　　　　　　 B．teacher's　 　　　　　 C．mother's　 　　　　　 D．roommate's

29. He serves the public wholeheartedly, ______ his personal gain or loss.

A. in case of　　 B. regardless of　　 C. in spite of　　 D. on account of

28. Some women _____ a good salary in a job instead of staying home, but they decided not to work for the sake of the family.

A. must make　　 B. should have made　　 C. would make　　 D. could have made

27. Is it _____ he often plays truant(旷课) to play games on the Internet _____ makes his parents angry with him?

A. since; what　　 B. that; what　　 C. because; that　 D. that; that

26. It’s believed that some words, such as “sandwich” and “hamburger”, were ______ the names of people or even towns.

A. apparently　　 B. relatively　　 C. originally　　 D. normally

25. Without facts, we cannot form a worthwhile opinion, for we need to have factual knowledge _____ our thinking.

A. which to base　　　 　B. Which to be based on　　 C. upon which to base　　 D. upon which to be based

24. When the old man was alive, he _____ sit for hours at the door, waiting for his grandson back from school.

A. might　　 B. must　　 C. got used to　　 D. would

23. They _____ on the programme for almost one week before I joined them, and now we _____ on it as no good results have come out so far.

A. had been working; are still working　　 B. had worked; were still working　　

C. have been working; have worked　　 　D. have worked; are still working

22. Many colleges in Sichuan decided to ______ the school due to the big earthquake in May, 2008.

A. delaying to open　 B. delay opening　 C. delay open　 D. delaying open