“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
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—Ms Lin looks rather a kind lady. —But in fact she is cold and hard on us. You ____believe it!
#90403
A
shouldn’t
B
wouldn’t
C
mustn’t
D
needn’t
Mr. White __________ at 8:30 for the meeting, but he didn’t show up.
#87078
A
should have arrived
B
should arrive
C
had arrived
D
should be arriving
The weather turned out to be fine. I the trouble to carry my umbrella with me.
#87563
A
needn’t have taken
B
wouldn’t have taken
C
won’t have taken
D
couldn’t have taken
Without Sir Tim, the father of the www, keeping up with the latest ____ so convenient．
#87411
A
would be
B
wouldn't be
C
would have been
D
wouldn't have been