It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
#62254
A
couldn’t
B
may
C
should
D
needn’t
推荐题目
-–Mary knows the city quite well.--She______ well have been there before.
#63125
A
need
B
could
C
should
D
may
–Have you decided where to spend your summer holiday?--Not yet. We _____ go to Hong Kong.
#74271
A
may
B
must
C
should
D
need
If the students who killed themselves had only been more confident, their deaths ________.
#63688
A
need have been avoided
B
must have been avoided
C
might have been avoided
D
will have been avoided
He has poor _______, so he can’t see the words on the blackboard clearly.
#77401
A
smell
B
taste
C
hearing
D
eyesight
—________I complete so much my homework now?— No, you ________.You can do it after supper.
#74934
A
May; ought not to
B
Should; can’t
C
Can; mustn’t
D
Must; needn’t