He paid for a seat, when he _________ have entered free.  
#89251
A
could
B
would
C
must
D
need
推荐题目
The manager ______ the worker how to do it, or the accident couldn’t have happened.
#87803
A
couldn’t have told
B
ought to tell
C
could have told
D
mustn’t have told
You did not go to the party yesterday, or I ___ you.
#89042
A
would see
B
could meet
C
might have seen
D
might see
—I failed again. I wish I ____ harder.---But you ____.
#86370
A
had worked; hadn’t
B
worked; don’t
C
worked; didn’t
D
had worked; didn’t