-May I smoke here?---If you that's the smoking section over there.A. shouldB.

问题补充：

------ May I smoke here?

------ If you, thats the smoking section over there.

A. should

B. could

C. may

D. must

答案：

A. should

B. could

C. may

(答案→)D. must

解析：

试题分析:理解句意：我可以在这抽烟吗？如果你一定要，在那边吸烟区吸烟吧！故选D