- Someone is knocking at the door. - It ______ be Tom. He is still in the school.
#74686
A
can’t
B
mustn’t
C
couldnot
D
might; not
推荐题目
-- Who do you think _____ such a foolish thing?-- It _____ Tom, but I’m not sure.
#62680
A
could have done; may have been
B
could have done; must have been
C
should have done; may be
D
must have done; might have been
If the students who killed themselves had only been more confident, their deaths ________.
#63688
A
need have been avoided
B
must have been avoided
C
might have been avoided
D
will have been avoided
You _____ lose your way if you walk alone in the mountains at night.
#77800
A
may
B
need
C
should
D
ought to
—Excuse me. May I sit here? —I’m afraid you _________. My daughter will come back soon.
#75583
A
can’t
B
mustn’t
C
needn’t
D
shouldn’t