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22. Of the two brothers, Bill is _______ younger one, and he is a quiet boy, ________ that most adults like very much.

　A. a, one　　　　　　　　　　 B. a, the one　　　　　　　　 C. the, one　　　　　　　　　　 D. the, the one

21. Ladies and gentlemen, please fasten your seat belts. The plane ________.

　A. takes off　　　　　 B. is taking off　　　　　　　 C. has taken off　　　　　　　　　 D. took off

34. Once _______ a difficult and even dangerous place , Vietnam is now a friendly

　　 destination that welcomes visitors from all over the world.

　 A. considered; visiting　　　　　　　　　　　　 B. considered; to visit

　 C. considering; visiting　　　　　　　　　　　 D. considering; to visit

33. There are no easy answers to questions brought to us by the rapidly changing world, _______ we can try to turn challenges into opportunities.

　 A. so　　　　　　　　　 B. but　　　　　　　 C. for　　　　　 D. then

32. If they _______ what I was saying, they'd know what I was talking about.

　A. took the trouble to listen to　　　　　　　　　 B. had trouble listening to

　 C. take the trouble to listen to　　　　　　　　　 D. have trouble listening to

31. "I wish you'd look at me when I'm trying to speak to you!" the teacher said _______.

A. excitedly　　　　　　 B. pleasantly　　　　 C. hopefully　　　 D. angrily

30. I bet Jack _______ when we get home.

　　 A. is still sleeping　　　　　　　　　　　　　　 B. is to be sleeping

　　 C. will still be sleeping　　　　　　　　　　　　 D. will have been sleeping

29. Susan invented a hundred little things to _______　 him happy, to _______ a smile to his

　　　 face.

　　 A. make; bring　　　　　 B. bring; make　　　　 C. make; offer　　 D. offer; make

28. Please don't call me at the office _______ it's really necessary.

　　 A. if　　　　　　　　　 B. unless　　　　　　 C. unless if　　　 D. except