---Look at these tracks. It _____ be a wolf.”  ---Don’t be so sure. I think it _____ be a fox.
#87712
A
must; could
B
may; might
C
need; must
D
could; need
推荐题目
I’d rather that you ______ the operation right away.
#88337
A
perform
B
should perform
C
will perform
D
performed
I ________ through that bitter period without your generous help.
#87448
A
couldn’t have gone
B
didn’t go
C
would go
D
hadn’t gone
---He will take you as well.---But I’d rather he ______.
#87584
A
won’t
B
didn’t
C
doesn’t
D
wouldn’t