31. Young _____ he is， he knows what is the right thing to do.

A. that B. as

C. although D. however

32. Someone borrowed my umbrella， _____ ？

A. didn‘t he B. didn’t they

C. did he D. did they

33. Nothing dangerous ever happened， _____ ？

A. did it B. didn‘t it

C. do it D. does it

34. _____ he objected to your impolite behavior is quite understandable.

A. That B. what

C. Which D. Whether

35. _____ he often forgot their wedding anniversary greatly annoyed his wife.

A. All B. What

C. Which D. That

36. I don‘t care _____ or not she will apologize to me.

A. if B. whether

C. what D. which

37. Seldom _____ any mistakes during my past five years of service here.

A. made I B. did I make

C. should I make D. would I make

38. Not until the year of 1945 _____ made the capital of this province.

A. the city was B. was the city

C. when the city was D. was when the city

39. There used to be some green at this spot， _____ ？

A. didn‘t there B. used there

C. wasn‘t there D. did there

40. _____ is announced in the papers， a nation-wide sport-meeting will be held in the city next month.

A. Because B. for

C. As D. So