— I smoke here?—No. You are not allowed to smoke in public places.A. CouldB. MustC. MayD.

问题补充：

— I smoke here?

—No. You are not allowed to smoke in public places.

A. Could

B. Must

C. May

D. Might

答案：

A. Could

B. Must

(答案→)C. May

D. Might

解析： 考查情景交际。“我能在这儿吸烟吗？”“不。你不许在公共场合吸烟。”A常表示委婉的请求；B“必须”；C“可以”，表示允许；might是may的过去式，表示的可能性比may还小。故选C。