问题
May I smoke here? —If you ________, choose a seat in the smoking section.
A:should
B:could
C:may
D:Must
B:could
C:may
D:Must
正确答案是：
同类题型
Be sure to make the invitations sent to ____ has takenpart in the competition
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It will be less than a fortnight_______we get to a turning point in our life
How I wish I_____________in their discussion, or I would write this composition easily now.