(2013·高考安徽卷)It ________ be the vocabulary that caused you the problem in the exercise because you know a lot of words.
#62467
A
may
B
couldn’t
C
should
D
needn’t
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The man ______ be my father. My father is much taller.
#76764
A
can
B
must
C
can't
D
mustn't
He ________ your car by mistake because he didn't have the keys. 
#62484
A
mustn't have taken
B
shouldn't have taken
C
couldn't have taken
D
needn't have taken