单项选择题

You must have seen the film last night, ______

A．didn't you
B．mustn't you
C．needn't you
D．do you
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单项选择题
Although they plant trees in this area every year, the tops of some hills are still
A．blank
B．hollow
C．vacant
D．bare
单项选择题
I ______ to him because he phoned me shortly afterwards.
A．ought to not have written
B．shouldn't have written
C．couldn't have written
D．needn't have written
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