—— I haven’t seen Johnson these days.—— I think she _______ a conference in Beijing, but I’m not sure.
#87946
A
should be attending
B
might be attending
C
could have attended
D
must have attended
推荐题目
I was really anxious about you.You ________ home without a word.
#86628
A
mustn't leave
B
shouldn't have left
C
couldn't have left
D
needn't leave
If he         my advice, he wouldn't have lost his job.
#86856
A
followed
B
should follow
C
had followed
D
would follow