---Who is the tallest boy?        ---It ______  be John. John is of medium height.
#77245
A
must
B
needn’t
C
might
D
can’t
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—Mum, must I wash the dishes right now?—No, you ____.
#75363
A
shouldn’t
B
wouldn’t
C
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D
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You _________ get up so early. It’s weekend today.
#75626
A
mustn’t
B
can’t
C
needn’t
D
oughtn’t