--Listen! Kate is playing the piano in the next room.  --It _______________be Kate. She has gone to Hangzhou to visit the Cross-sea Bridge.
#78174
A
needn’t
B
mustn’t
C
can’t
D
shalln’t
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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