---There is somebody knocking at the door. Who________ it be?---I’m not sure. It ________ be a postman.
#75825
A
may; must
B
will; can
C
can; may
D
may; will
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---Alice, you didn’t come to Tim’s birthday last night. ---I wished I had, but my parents just simply___ not let me out so late at night.
#62662
A
might
B
should
C
would
D
could
Harry is feeling uncomfortable.He________too much at the party last night.
#62301
A
could drink
B
should drink
C
would have drunk
D
must have drunk
---Must we leave the classroom now?---No, you _____. You _____ leave after the bell rings.
#75608
A
mustn't; are allowed to
B
don't have to; might
C
needn't; can
D
can't; are supposed to
Even a drop of water ______because it is so important to all the living things.
#76903
A
must waste
B
must be wasted
C
mustn’t waste
D
mustn’t be wasted
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