If you _____ smoke, please go outside because this is a non-smoking office.
#63602
A
must
B
should
C
can
D
may
推荐题目
I ________ work out the problem at first, but after my teacher showed me an example, I ________ get the answer easily.
#63120
A
couldn’t; was able to
B
can’t; could
C
wasn’t able to; could
D
was able to; was able to
---Listen! Is Kitty in the next room? ---No, it ______ be Kitty. She has gone to Beijing.
#76364
A
may not
B
can’t
C
mustn’t
D
needn’t
–Excuse me, I get back my umbrella, madam? –I’m really sorry. I thought it was mine.
#74586
A
must
B
should
C
may
D
need
---Must I learn the new words in heart today?---No, you _______. You ______ do it tomorrow.
#74845
A
needn’t; may
B
mustn’t; must
C
mustn’t; may
D
needn’t; mustn’t