单项选择题

He must have stayed up late last night, ____ he

A．mustn’t
B．needn’t
C．hasn’t
D．didn’t
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单项选择题
_____ right now, she would get there on Sunday.
A．Would she leave
B．If she leave
C．Were she to leave
D．If she had left
单项选择题
The room is quite neat, it ____.
A．doesn’t need to cleaning
B．needn’t to cleaning
C．doesn’t need cleaning
D．needn’t cleaning
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