单项选择题

Tom’s mother did not tell him ______ she would come or not.

A.when
B.whether
C.where
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单项选择题
— Must I finish the homework now — No, you ______. You may do it this evening.
A.mustn’t
B.needn’t
C.can’t
单项选择题
They have decided to go to see the film ______ Friday afternoon.
A.in
B.on
C.at
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