题目内容

-Shall I get one more cake for you, Dad? -Thanks, but you___, I've had enough.

A. may not
B. must not
C. can't
D. needn't

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更多问题

Even the top students in our class can't work out this problem, so it ___bevery difficult.

A. may
B. must
C. can
D. need

The children___ play football on the road.

A. can't
B. can
C. mustn't
D. must

-Must I do my homework at once? -No, you___.

A. needn't
B. mustn't
C. can't
D. may not

You had better stay here, ___ you?

A. didn’t
B. don’t
C. hadn’t
D. aren’t