English is a language that many people around the world _______not speak perfectly but _________at least understand．
#76602
A
may，can
B
would，might
C
can，must
D
should，can
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My sister met him at the street yesterday afternoon, so he __________ your lecture.
#63077
A
shouldn’t have attended
B
couldn’t have attended
C
mustn’t have attended
D
needn’t have attended
—May I play computer games, Mum?—No, you ______. You’ve got a lot of homework to do.
#78144
A
needn’t
B
mustn’t
C
wouldn’t
D
won’t
—Miss Li, must we hand in our homework right now?—No, you ____.You can hand it in tomorrow.
#77809
A
don’t
B
mustn’t
C
needn’t
D
may not