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— Who _____ be phoning us at this time of night? — It might be your sister. 
#63064
A
might
B
can
C
dare
D
must
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The doctor said he _______ an operation yet.
#75873
A
need
B
needn’t
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needed not
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A
Howlong
B
How far
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#76879
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A
must
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would
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should
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might
—Must I come back before supper, mum?—No, you        .
#76497
A
can’t
B
mustn’t
C
don’t
D
needn’t