---Someone is knocking at the door. Who may it be? ---It ______ be Tom. He is still in the school.
#74601
A
can’t
B
mustn’t
C
couldn’t
D
may not
推荐题目
Something terrible _________ if he didn’t come to the bar as he always did.
#62701
A
should happen
B
might happen
C
must have happened
D
can have happened
--- Can we leave the classroom now?-- No, you ______. You ______ to leave until the bell rings.
#75539
A
mustn’t, are allowed
B
don’t have to, are supposed
C
needn’t, aren’t allowed
D
can’t, aren’t supposed
—Why did you leave without a word of warning to John?—But what _____ otherwise? He never listens to me.
#63135
A
could I have done
B
would I do
C
must I have done
D
should I do
----Will you take up teaching as a career after graduation?---- Hard to say. I ________ go abroad for higher education instead, but it depends.
#62549
A
must
B
should
C
might
D
shall