–What do you think the noise was? --It ___________ a cat.
#63484
A
may be
B
might be
C
can have been
D
might have been
推荐题目
------Is this ruler Mary’s?------No, it _______Mary’s. Hers is on the desk..
#76705
A
can be
B
can’t be
C
must be
D
mustn’t be
Don’t worry about your future. As long as you try your best, a great future ________ wait for you on your way.
#62599
A
would
B
can
C
must
D
should
We _______the letter yesterday, but it didn”t arrive.
#63105
A
must receive
B
ought to receive
C
must have received
D
ought to have received
Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous.
#74948
A
mustn’t
B
ought not to
C
needn’t
D
don’t have to
You _______ have told her the bad news last night, because she wouldn’t handle it peacefully.
#63458
A
couldn’t
B
mustn’t
C
shouldn’t
D
mightn’t