—I called you at 9 last night，but no one answered.—Sorry，I ________ sleeping.I went to bed very early.
#62284
A
need have been
B
would have been
C
must have been
D
should have been
推荐题目
Students ___________ remain in their seats until all the papers have been collected.
#63046
A
may
B
shall
C
need
D
can
– James didn’t ____ last night, did he?– No. He ____. We had changed our plan.
#63144
A
turn away; shouldn’t have come
B
turn up; needn’t have come
C
turn up; didn’t need to come
D
turn away; doesn’t need to come
—What does the sign over there read?—No person smoke or carry a lighted cigarette, cigar or pipe in this area.
#63185
A
will
B
may
C
shall
D
must
It be difficult to get a train ticket during traditional Chinese Spring Festival this year because there are many ticket windows.
#63304
A
mustn’t
B
ought to
C
needn’t
D
can’t
The problem is too difficult for him. He _______ solve it by himself without any help.
#76048
A
can't
B
mustn't
C
shouldn't
D
needn't