—May I smoke here?
—If you _______, choose a seat in the smoking section.
A. should B. could
C. may D. must
—May I smoke here?
—If you _______, choose a seat in the smoking section.
A. should B. could
C. may D. must
D
句意为“如果你非要抽烟的话,选择一个抽烟区的座位吧”。must意为“必须,一定要”。