—Sorry, sir. I can’t answer this question. ---Well, you are supposed______ this part of history.
#86779
A
reading
B
to be reading
C
to have read
D
having read
推荐题目
If Peter had not hurt his leg, he ______ the important meeting last week.
#86505
A
will attend
B
attended
C
would have attended
D
would attend
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
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