32. The scientist has stayed in his office for a whole morning, ___ the problem.　　

　　 A. look at　　 B. looking after　 C. look into　 D. looking at

31. The defendant couldn’t _____ the fact that the money was found in his house.

　 A. account to　　 B. account for　 C. account in　　 D. account on

30. Winter comes. few leaves ___ on the trees.

A. remaining　　 B. remain　　 C. are remained　 D. leave

29. ---Look ！How long ___ like this ?

---Three weeks ！It’s usual here that rain ___ without stopping these days of the year.

A. has it been raining , pours　 B. has it rained , has poured

C. is it raining, pours　　　　 　D. does it rain, has poured

28. --- Mum, I want to go for a walk .

--- Sorry , I’d rather you ____ .

A. won’t　　 B. didn’t　　 C. don’t　　 D. hadn’t

27. Do you expect _______ be a chance to study abroad?

　 A. it to　　　　　 B. it　　　　　 C. there to　　　 D there

26. Unable to practice their traditions, many young Roma 　　　　illegal behavior, such as stealing, and were usually the main suspects when anything went missing.

A. took to　　 B. took on　　 C. took up　　 D. took in

25. ---Would you like some coffee ?

--- Yes , and please get me some milk, too. I prefer coffee ___ milk.

A. to　　 B. with　　 C. than　 D. of

24. It is reported that the United States uses ___energy as the whole of Europe .

A. twice as many　 B. twice much　 C. twice much as　 D. twice as much

23.A teacher should not show ___ for any one of his pupils.

　 A. prefer　 B. refer　 C. preference　 D. reference