My sister met him at the Grand Theatre yesterday afternoon，so he ________ your lecture.
#62507
A
couldn't have attended
B
needn't have attended
C
mustn't have attended
D
shouldn't have attended
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A
Need
B
Must
C
Shall
D
Will
He _____ be really difficult at times even though he ,generally speaking, is a nice person.
#63426
A
can
B
should
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shall
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must
Keep up good state of mind even if you ________ fail plenty of times.
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A
must
B
will
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can
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should
—Someone is knocking at the door. Is it Ann?—It _____ be her. She is giving a performance at the theatre now.
#75354
A
may
B
must
C
can’t
D
mustn’t
—Look at that girl! Is it Susan?—No, it _______ be her. She has gone back to her hometown.
#77503
A
mustn’t
B
can’t
C
needn’t
D
wouldn’t