He ____ writing the paper now. He hadn’t written a single word when I left him ten minutes ago.
#89345
A
shouldn’t be
B
can’t have finished
C
can’t be
D
mustn’t have finished
推荐题目
I’m feeling sick. I __________so much chocolate.
#88080
A
needn’t have eaten
B
couldn’t have eaten
C
mustn’t have eaten
D
shouldn’t have eaten
—I’ m sorry. I  ______ at you the other day.---Forget it. I was a bit out of control myself.
#87288
A
shouldn’t shout
B
shouldn’t have shouted
C
mustn’t shout
D
mustn’t have shouted
________ you come earlier, you ________ met him. He just left half an hour ago. 
#87396
A
Should; would
B
Were; could
C
Had; would have
D
Could; would have
Perce Blackborow and his companions stayed on Elephant Island for six months before rescue came, so they ________ a lot of difficulties.
#87871
A
must go through
B
may go through
C
must have gone through
D
could have gone through