—When did you start your math homework?—One hour ago, but I _____ it yet.A. didn

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—When did you start your math homework?
—One hour ago, but I _____ it yet.A. didn"t finish
B. finished
C. have finished
D. haven"t finished

答案

举一反三

Jim with his friends many places in China. [ ]
A. visited
B. have visited
C. has visited
D. are visited

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In the last six weeks, Jerry four books.[ ]
A. reads
B. has read
C. read
D. have read

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I must return the dictionary to Allen now. I ____ it for three weeks already.       [     ]
A. kept
B. will keep
C. have kept

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How many times _____he _____to London?        [     ]
A. has; been
B. has; gone
C. have; gone
D. have; been

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看看你的应变能力，用所给单词的适当形式填空。1. They_____(live) here for ten years.
2. There are_____(piano) in this school.
3. There are fifteen _____(woman) in our school.
4. Please take some _____(photo)of me.
5. How long _____he _____(be) a teacher?

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