问题描述：
-Mr.Wu,must we hand in our reports today?-No,you ___.A.mustn't B.can't C.shouldn't D.don't have to
I‘m happy that the summer holiday is coming soon.I __ do what I like.
A.can B.have to C.could D.must
The room is clean and tidy.You ___ clean it.
A.don't have to B.mustn't C.can't D.couldn't
He thinks of the Marlin ___ his friend,but he must kill it.
A.and B.be C.as D.for
I‘m happy that the summer holiday is coming soon.I __ do what I like.
A.can B.have to C.could D.must
The room is clean and tidy.You ___ clean it.
A.don't have to B.mustn't C.can't D.couldn't
He thinks of the Marlin ___ his friend,but he must kill it.
A.and B.be C.as D.for
问题解答：
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