单项选择题


A．at
B．by
C．for
D．around
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单项选择题
The library needs______, but it'll have to wait until Sunday.
A．cleaning
B．be cleaned
C．clean
D．being cleaned
单项选择题
She______.
A．mustn't have hurried
B．couldn't have hurried
C．must not hurry
D．needn't have hurried
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