------ May I smoke here?------ If you____, that's the smoking section over there.
#63312
A
should
B
could
C
may
D
must
推荐题目
Teenagers _______ allowed to drive in the street .
#76447
A
should not be
B
should be not
C
not should be
D
shouldn't
You ______ be polite to the old man.
#77237
A
should
B
can’t
C
might
D
mustn’t
—Must I come back before supper, mum?—No, you        .
#76497
A
can’t
B
mustn’t
C
don’t
D
needn’t