---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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When the traffic lights are red, we _______ stop.
#77230
A
should
B
might
C
must
D
may
We _______ work very quickly.
#76098
A
don’t need
B
needn’t to
C
need not to
D
don’t need to