Things should here before you enter the Great Museum. [ ]A. kee

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Things should          here before you enter the Great Museum.     [     ]
A. keeps
B. keep
C. be kept
D. are kept

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举一反三

The work         in two hours. Let"s hurry.    [     ]
A. must be finished
B. must finish
C. will finish

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Old people _____ these days. They are living a happy life.                 [     ]
A. are taken care of
B. take good care of
C. were looked after
D. look after

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The road _____last year.            [     ]
A. builds
B. built
C. was built
D. is built

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用方框内单词的适当形式填空。

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