31. We were not ________ to do like that.

promised B. permitted C. agreed D. suggested

30.---_________ do you call it in English ---Bread.

A. How B. Which C. What D. Why

29. Our living expenses are now much ________ than ten years ago.

more B. more expensive C. greater D. higher

28. The number of students here is ________ than that of their school.

much more B. more C. higher D. larger

27. I wonder when he will return _________ the book.

A. A. back B. to C. back to D. /

26. I had no idea why they had returned _______ the village so soon.

A. back B. to C. back to D. /

25. We will continue to fight ________ pollution until it is stopped.

about B. with C. for D. against

24. __________ is the population of Hainan

What B. How C. How much D. How many

23.The song was so instructive that everyone considered it __________ worth listening to.

well B. very C. fairly D. hardly

22. Those who have been invited are _________ young scientists.

most B. almost C. mostly D. at most