-Must I do my homework at once? -No, you___.
A. needn't
B. mustn't
C. can't
D. may not
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You had better stay here, ___ you?
A. didn’t
B. don’t
C. hadn’t
D. aren’t
You'd better ___ late next time.
A. not to be
B. not be
C. won't be
D. don't be
You'd better ___ your hair ___ once a month.
A. had; cut
B. had; cutted
C. have; cut
D. have; cutted
-Shall we go and visit the History Museum next Sunday?
A. Here you are
B. Sorry, I can't
C. Yes, please
D. Let me try