“Show me your permit, please.” “Oh, it’s not in my pocket. It ______.”
#89543
A
might fall out
B
could fall out
C
should have fallen out
D
must have fallen out
推荐题目
It is strange that such a thing____ in your school.
#88017
A
should happen
B
would happen
C
will happen
D
happened
He ______. It's a shame my mobile phone was power-off.
#90420
A
ought to call me
B
could have called me
C
may be calling me
D
might call me
They must have been here the day before yesterday,____? 
#89896
A
mustn’t they
B
didn’t they
C
mustn’t have they
D
had they
 Mr. White _______ at 8:30 for the meeting, but he didn’t show up. 
#89256
A
should have arrived
B
should arrive
C
should have had arrived
D
should be arriving