单项选择题

—Mum, tomorrow is Sunday. Must I get up at six—No, you ___________.

A． mustn't
B． couldn't
C． needn't
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单项选择题
The old teacher ___________in this school since 1962.
A． worked
B． works
C． has worked
单项选择题
The policeman told the boys ___________in the street.
A． not to play
B． don' t play
C． not play
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