16. Medical treatment _______ greatly from state to state.
A. various B. variety C. varies D. varying
17. The teacher would have to spend a lot of time _______ what the studen’ts already know in the subject.
A. find out B. to find out C. finding out D. found out
18. His father _______ English here since he graduated from Peking University.
A. has taught B. teaches C. taught D. had taught
19. His handwriting is not very neat. In fact, it is sometimes very difficult to _______.
A. justify B. examine C. identify D. check
20. _______ on the tower, we could see the whole city.
A. Standing B. Stand C. Stood D. To stand
21. Tom, you _______ play with the knife. You _______ hurt yourself.
A. won’t; can’t B. mustn’t; may
C. shouldn’t; must D. can’t; shouldn’t
22. By the time he was 12, Edison _______ to make a living by himself.
A. would begin B. has begun
C. had begun D. was begun
23. I _______ my breakfast when the morning post came.
A. had B. had been having
C. haven been having D. was having
24. Where there _______ a will, there is a way.
A. is B. was C. will be D. has been
25. —Must I stay here for hours?
—No, you _______, You can leave any time.
A. mustn’t B. needn’t C. can’t D. wouldn’t
26. Mary _______ be at home. I saw her in the library just now.
A. mustn’t B. needn’t C. shouldn’t D. can’t
27. Before 2010 we will finish _______ the park.
A. build B. built C. building D. to build
28. Almost everyone fails _______ the driver’s test on the first try.
A. at passing B. to have passed
C. to pass D. on passing
29. These girls have an advantage _______ those in calculation.
A. over B. than C. to D. with
30. Out new hose is very _______ for me as I can get to the office in five minutes.
A. adaptable B. comfortable
C. convenient D. available

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