The boss ______ the worker how to do it, or the accident couldn’t have happened.
#63303
A
can’t have told
B
ought to tell
C
could have told
D
mustn’t have told
推荐题目
--- He worked out such different questions at a very young age.--- Oh, he ______ a very smart student then.
#63131
A
could have been
B
should have been
C
might have been
D
must have been
We can hardly believe such a young boy ______ travel around the world all by himself.
#62532
A
may
B
need
C
should
D
must
Sorry I’m late. I ____ have turned off the alarm clock and gone back to sleep again.
#63143
A
might
B
should
C
need
D
will