33. A proper approach to ________ your learning efficiency is of great significance to every student.

　 A. improving　　　　　 B. improve　 　　　　　　　　 C. be improving　　　 　 D. having improved

32. -Why are you looking so worried?

　 　 -I sent an email to my son in America last week, but no reply ________.

A. was received　　　　　　 B. had received　　　 　　 C. has received　　　 　 　 D. has been received

31. When the environmentally friendly cars came onto the market, many people were eager to buy them ________ the price.

　 A. wherever　　　　　　 B. however 　　　　　　　　 C. whichever 　　　 　　　　　 D. whatever

30. -I believe Tom to be a great businessman like Bill Gates in the future.

　 　 -Why do you think so?

　 　 -Because he is ________ in business.

A. as hungry as a lion 　　　　　 　　　　　　　　　　 B. as sharp as a spear

C. as busy as a bee 　　　　　　　　　　　　　　　　　　　　 D. as sly as a fox

29. Men will ________ all the natural resources if they continue consuming them like that.

　 　A. run out　　　 　　 B. wipe out　　　　 　　 C. drop out　　　　 　 D. hold out

28. An official said the plan had also taken migrant workers into account, ________ medical care would be provided even if they didn’t have a stable job.

　 A. for whom　　 　　 B. for which　　　 　　 C. with whom　　　 　　 D. with which

27. -I expected him to be nervous before his speech, but he was as cool as a cucumber.

　 　 -He _______ it carefully.

A. could have prepared　　 　 B. shouldn’t have prepared

　 C. must have prepared 　　　　　 D. can’t have prepared

26. -Peter looks sleepy.

　 　 -So ________ if you had a fever.

　 A. did you　　　　 　　 B. would you　 　　 　　　 C. you did　　　　　　 　　 D. you would

25. -I can’t find my favourite magazine.

　 　 -I saw Jack going away with ________, but I’m not sure whether it’s yours.

A. it 　　　　　　　　　　 　　B. that　　　　　　　　　 　 C. one 　　　　　　　　　　　　　 D. some

24. _______ from endless homework on weekends, the students now find their own activities, such as attending school literature clubs.　

　 A. Having freed　　　　 B. Freeing　　　 　　　 C. To be freed　　　 　　 D. Freed