I____ asleep because it took me a long time to realize that the telephone was ringing.
#88031
A
could have fallen
B
should have fallen
C
must have fallen
D
mustn’t have fallen
推荐题目
---Excuse me,but I want to ride your bike to go to the bookshop. ---You ____ have my bike if you don't take care of it.
#90028
A
shan’t
B
might not
C
needn’t
D
shouln’t
—It’s hard to believe that Jack should have fought with the policeman.—Yes. If one ____ ask for trouble, it can’t be helped.
#87262
A
may
B
need
C
must
D
should
---I feel the house shaking.----So do I .It ___ be sign of an earthquake most probably. Let’s hurry to leave here.
#90314
A
ought to
B
could
C
can
D
might
It is required that students _____mobile phones at school, so seldom _____them using one.
#87519
A
don’t use; will you see
B
should not use; you will see
C
not use; will you see
D
can’t use; will you see
---Sorry, Professor Smith. I didn't finish the assignment yesterday.---Oh, you have done it as yesterday was the deadline.
#87069
A
must
B
mustn't
C
should
D
shouldn't