—I wonder why Mr Green hasn't showed up at the meeting yet.—I'm not sure，but he________in a traffic jam driving here.
#62838
A
could be stuck
B
might have been stuck
C
might be stuck
D
must have been stuck
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―Must I report the situation of the new company to the manager now? ―No, you . You are tired and you can do it after you have a good rest.
#78285
A
mustn’t
B
needn’t
C
shouldn’t
D
can’t
Whether dying patients be helped to end their lives is a tough moral question.
#62244
A
must
B
should
C
might
D
would