My sister met him at the street yesterday afternoon, so he __________ your lecture.
#63076
A
shouldn’t have attended
B
needn’t have attended
C
mustn’t have attended
D
couldn’t have attended
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It ______ be the postman at the door. It’s only six o’clock.
#63562
A
mustn’t
B
can’t
C
won’t
D
needn’t
We        the difficulty together, but why didn’t you tell me?
#63184
A
need have faced
B
can have faced
C
could have faced
D
must have faced
You       buy a gift, but you can if you want to.
#62926
A
must
B
mustn't
C
have to
D
don't have to