21. Our society has changed and _____ in it.

　　A. so the people have B. the people have so

　　C. so have the people D. have the people so

　　22. Parking is a big problem， _____ .

　　A. the traffic is so B. is so the traffic

　　C. so the traffic is D. so is the traffic

　　23. You never told me you have seen the film， _____ .

　　A. had you B. didn‘t you

　　C. did you D. weren‘t you

　　24. Don‘t forget to post the letter for me， _____ ?

　　A. do you B. will you

　　C. are you D. can you

　　25. Not until I came to China ______ what kind of a country she is.

　　A. I knew B. I didn‘t know

　　C. I did know D. did I know

　　26. I don‘t believe you are a student now， ____ you?

　　A. did B. are

　　C. will D. don‘t

　　27. Do what you think is right， _____ they say.

　　A. however B. whatever

　　C. whichever D. if only

　　28. _____ is well known， light， like heat， is a form of energy.

　　A. It B. what

　　C. Just as D. As

　　29. We can hardly avoid making any mistakes in our work _____ hard we try.

　　A. whatever B. how

　　C. no matter D. however

　　30. They are _____ students that they all performed well in the nationwide examinations.

　　A. so diligent B. such diligent

　　C. so much diligent D. such very diligent

　　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