21. — ____ makes her different from the other students?

　　— Honesty, I think.

　　A. How is it that B. How is that

　　C. What is it that D. What it is that

　　22. She won’t leave the TV set, ____ her husband is waiting for his supper.

　　A. as though B. even though C. whether D. whenever

　　23. It is the teacher ____ taught me when I was a child ____ I am going to visit.

　　A. that; which B. who; which C. who; that D. whom; that

　　24. It was in the school ____ he had studied ____ he began the important experiment.

　　A. that; where B. in which; which

　　C. where; that D. where; in which

　　25. ____ on Monday night that all this happened?

　　A. Is it B. It is C. Was it D. It was

　　26. Is there anything else ____ you want to get ready for the party this evening?

　　A. which B. that C. who D. what

　　27. I ____ see him yesterday.

　　A. really B. do C. did D. does

　　28. ____ come again.

　　A. Do B. Can C. May D. Did

　　29. ____ be careful when crossing the street!

　　A. Must B. Should C. Ought to D. Do

　　30. It was ____ the old worker came that we ____ the experiment.

　　A. until; didn’t begin B. not until; began

　　C. until; began D. not until; didn’t begin

　　31. It is I ____ singing in the garden.

　　A. who are B. who is C. that am D. that is

　　32. Hardly ____ into the country ____ it began to rain.

　　A. we had got; when B. we got; than

　　C. had we got; when D. did we get; than

　　33. Not a single word ____ last night.

　　A. he said B. said he C. did he say D. had he said

　　34. Little ____ about what others think.

　　A. he cares B. he doesn’t care

　　C. does he care D. doesn’t he care

　　35. Seldom ____ any mistakes during my past few years of working there.

　　A. would I make B. have I made C. I did make D. shall I make

　　36. He is a good student, and works very hard; ____.

　　A. so it is with her B. so does she

　　C. so is she D. neither does she

　　37. Only when it is hungry ____ attack a human being.

　　A. a lion will B. did a lion C. will a lion D. do a lion

　　38. Look! ____.

　　A. Here your teacher comes B. Comes here your teacher

　　C. Your teacher come here D. Here comes your teacher

　　39. No sooner ____ to shine ____ it clouded over again.

　　A. the sun had started; than B. had the sun started; than

　　C. the sun started; when D. did the sun started; when

　　40. So loudly ____ that even people in the next room could hear him.

　　A. did he speak B. spoke he C. he spoke D. should he speak