33. –Did the boy pass the exam?

　 --No. He _____ it, but he wasn’t careful enough.

A. was able to pass　　 B. could have passed　

C. must have passed　 D. might be able to pass

32. I felt proud that my assistance in the investigation led to ______.

A. the thief to be caught　 B. the thief being caught

C. the thief was caught　　 D. being caught the thief

31. The Chinese government _____ that all the citizens will have had enough food and clothing by 2010.

A. promised　 B. will promise　 C. has promised　 D. had promised

30. _____ only five minutes to go before the teacher collected our exam papers, I felt uneasy as I had not yet checked the answers.

A. With　　 B. Until　　 C. Because　　 D. For

29. Not many people knew Kangaroo were in Australia ____ about 200 years ago when Captain Cook sailed there from England.

A. since　 B. until　 C. for　　 D. before

28. We think it is John rather than you that _______.

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

27.When I was a child, Father and I _______ get up early and go fishing on Sundays.

A. could　 B. would　 C. might　　 D. should

26._____ to somebody, a British often shakes hands with the stranger.

A. When introducing　 B. To introduce　

C. To be introduced　 D. When being introduced

25. I can’t ____ what has happened to the poor child, for he was only sent to hospital yesterday.

A. draw out　 B. look out　 C. figure out　 D. work out

24. If something is “dog-eat-dog”, it is a situation ______ people have to take care of themselves and look after their own interests.

A. on which　 B. in which　 C. by which　 D. for which