—— May I leave the office before 5 o’clock in the afternoon? —— No, I’m afraid you_______. 
#89922
A
needn’t
B
shouldn’t
C
mustn't
D
won’t
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---Is there any flight to Tokyo today ?---I think there __, for the weather is too bad.
#89837
A
mustn’t be
B
mightn’t be
C
needn’t be
D
can’t be
It’s still early, you _____.
#90217
A
mustn’t hurry
B
wouldn’t hurry
C
may not hurry
D
don’t have to hurry