Mr. Smith is always on time for everything. How ________ it be that he was late for the flight?
#63168
A
can
B
must
C
may
D
need
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He ________ to the cinema last night, for he stayed with me.
#62699
A
mustn’t go
B
shouldn’t have gone
C
could not go
D
couldn’t have gone
He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside．
#62721
A
should
B
must
C
wouldn’t
D
can’t
–Who is the tallest boy?–It ______ be John. Because John is of medium height..
#75231
A
must
B
needn’t
C
might
D
can’t