单项选择题

（）three years since Nancy had her vacation.

A．It was
B．There was
C．It is
D．There is

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单项选择题
None of the food was wasted,（）

A．were they
B．didn't it
C．was it
D．wasn't it
单项选择题
There was plenty of time. She（）

A．mustn't have hurried
B．needn't have hurried
C．mustn't hurry
D．couldn't have hurried
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