--- _________ David be the new chairperson of the Students’ Union? --- He ________ be, but I’m not sure.
#74581
A
Can; can’t
B
Can; may
C
May; must
D
May; mustn’t
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We ________the difficulty together, but why didn’t you tell me?
#62629
A
should face
B
might face
C
could have faced
D
must have faced
My sister met him at the Grand Theater yesterday afternoon, so he ________ your lecture.
#63289
A
couldn’t have attended
B
needn’t have attended
C
mustn’t have attended
D
shouldn’t have attended