---- May I smoke here?--- If you      , choose a seat in the smoking section.
#62982
A
should
B
could
C
must
D
may
推荐题目
 -- Are these _______ all from No. 2 Middle School? -- Yes. They often _________ their free time to help the old here.
#74662
A
volunteers; volunteers
B
volunteer; volunteers
C
volunteers; volunteer
D
volunteer; volunteer
The colour yellow______ the feeling of________.
#77339
A
makes;energy
B
creates;warmth
C
represents;purity
D
creates;harmony
That man over there _____ be Mr Wang . He has gone to Yushu. 
#74843
A
may
B
mustn’t
C
should
D
can’t