单项选择题

It was very kind of you to do the cleaning, but you ______it.

A．mustn't have done
B．wouldn't have done
C．couldn't have done
D．needn't have done
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单项选择题
It is high time that you ______ for the job interview.
A．prepared
B．prepare
C．to prepare
D．will prepare
单项选择题
______in Guangzhou for ten years, he knew the City very well.
A．Living
B．To live
C．Lived
D．Having lived
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