—— 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
—Your composition is full of mistakes. —I wish I _________more careful.  
#88263
A
would have been
B
had been
C
would be
D
were
 When he saw all his books _____ here and there on the floor, he knew that something terrible _____. 
#88903
A
lying; must have happened
B
lie; must happen
C
lay; might have happened
D
had lain; could have happen