The boss____________ the worker how to do it, or the accident couldn't have happened.
#89996
A
can't have told
B
ought to tell
C
could have told
D
mustn't have told
推荐题目
-I wonder why Mr Green hasn’t showed up at the meeting yet.-I’m not sure, but he _______ in a traffic jam driving here.
#89231
A
could be stuck
B
might stuck
C
might have been stuck
D
must have stuck
I’m surprised that he _____ in the exam.
#90197
A
should fail
B
would have failed
C
may have failed
D
should have failed
There was a lot of fun at yesterday’s party. You______come, but why didn’t you?
#90546
A
must have
B
should
C
need have
D
ought to have
—You didn’t invite Mary to the ball?—____ her, too?
#89489
A
Must I invite
B
Should I have invited
C
Must I have invited
D
Should I invite