“Look at these tracks. It _______ be a wolf.” “Don’t be so sure. I think it _______ be a fox.”
#89541
A
must; could
B
may; might
C
need; must
D
could; need
推荐题目
—The wind is always blowing here．—How I wish it ______ today．
#87147
A
won't blow
B
didn't blow
C
doesn't blow
D
isn't blowing
-I wonder why Mr Green hasn’t showed up at the meeting yet.-I’m not sure, but he _______ in a traffic jam driving here.
#89231
A
could be stuck
B
might stuck
C
might have been stuck
D
must have stuck
He ______. It's a shame my mobile phone was power-off.
#90420
A
ought to call me
B
could have called me
C
may be calling me
D
might call me
-----I _____without your help. I do appreciate it . -----You are welcome.
#86686
A
can’t manage
B
couldn’t manage
C
can’t have managed
D
couldn’t have managed
When a pencil is partly in a glass of water, it looks as if ＿＿＿＿.
#89905
A
breaks
B
has broken
C
were broken
D
had been broken