用mustn't
我们老师说的,不是否定回答（用needn't）
must的否定怎么看?
must的否定怎么看?
eg:
A:We always get home late for supper.
B:You're right.So we ( ) be late this time.
A.needn't B.mustn'tC.don't need to D.don't have to
eg:
A:We always get home late for supper.
B:You're right.So we ( ) be late this time.
A.needn't B.mustn'tC.don't need to D.don't have to
英语人气：981 ℃时间：2020-01-28 11:14:57
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