—What will the weather be like tomorrow?—It _______ be rainy, cloudy or sunny. Who knows?
#74255
A
must
B
might
C
shall
D
should
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The door _______ open, no matter how hard she pushed. 
#62534
A
shouldn‘t
B
couldn't
C
wouldn't
D
mightn't
–Mom, must I stay there the whole day?--No, you______. You ____ come back after lunch, if you like.
#74096
A
mustn’t, can
B
needn’t, must
C
needn’t, may
D
mustn’t, may
As it turned out to be the most important meeting in the year, you ____ so casually. 
#62823
A
Shouldn’t dress up
B
shouldn’t have dressed up
C
needn't have dressed up
D
couldn’t dress up