单项选择题

You ______ talk so loud in the library.

A．needn't
B．may not
C．mustn't
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单项选择题
Tom is listening to the teacher. But he can't ______ him.
A．listen
B．listen to
C．hear
单项选择题
Christmas is an important festival (节目) in Britain and many ______ countries in the world.
A．other
B．the other
C．another
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