21. Generally, the thicker a mammal’s (哺乳动物) skin is, the less hair ______.
A. that has it B. that it has C. has it D. it has
22. My father ______ an invitation to a dinner party, but he _______ it.
A. accepted…received B. received…accepted
C. accepted…didn’t receive D. received…didn’t accept
23. _______ their homework, the children went for a walk.
A. When they were doing B. After they have done
C. Having done D. They had done
24. My parents never let me _______ alone.
A. to travel B. to travelling C. travelling D. travel
25. Hardly _______ the classroom when the class began.
A. had he entered B. he had entered C. he entered D. he was entered
26. We all enjoy working _______ him because he is a kind leader.
A. along B. in C. under D. on
27. She is _______to refuse, so I have to give in.
A. a too kind girl B. too a kind girl
C. too kind a girl D. a gird kind too
28. He couldn’t use his own car because it ________ then.
A. was being repaired B. was repairing
C. is repairing D. has been repaired
29. _______ go to the Great Wall for a visit?
A. Why don’t B. How about C. Will we D. Why not
30. With the guide ______ the way, we set out on foot into the night dark.
A. lead B. leading C. led D. to lead
31. He seems _______ from this university.
A. graduating B. being graduated C. to graduate D. to have graduated
32. The refugees need many things, but _______, they need food and medicine.
A. at most B. above all C. after all D. at the first
33. ______ France Viuard an excellent political speaker but she was also among the first members of the populist party.
A. Not only B. If only C. Only D. Not only was
34. He failed in the examination three times but _______ he passed.
A. at end B. at finish C. at last D. at least
35. On his return from his college, he found the house ________.
A. deserting B. deserted C. desert D. to be deserted
36. When Jane fell off the bike, the other children ________.
A. were not able to help laughter B. could not help but laughing
C. could not help laughing D. could not help to laugh
37. English is _______ interesting to us.
A. much B. very C. very much D. more
38. Grammar books here _______ well.
A. are sold B. sell C. sells D. have been sold
39. If everybody is _______, let’s begin our class.
A. sat B. seated C. seat D. sitted
40. He must have been there before, ________?
A. hasn’t he B. haven’t he C. doesn’t he D. isn’t he
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