单项选择题

--Must I turn the paper in at the end of this week --No, you ______.

A．mustn’’t
B．needn’’t
C．don’’t
D．shouldn’’t
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单项选择题
A．toB．forC．withD．of
A．to
B．for
C．with
D．of
单项选择题
______ for you help, we’’ d never have been able to get over the difficulties.
A．Had it not been
B．If it were not
C．Had it not
D．If we had not been
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