I have a ticket please?---Sorry sir. All the tickets were sold out ten minutes ago.A

问题补充：

--- I have a ticket , please?

---Sorry,sir. All the tickets were sold out ten minutes ago.

A. May

B. Need

C. Must

D. Should

答案：

(答案→)A. May

B. Need

C. Must

D. Should

解析：考查情态动词。“我能买一张票吗？”“对不起，先生。10分钟前所有的票都卖完了。”may“可以”，用于句首，表示请求；need“需要”；must“必须”；should“应该”。故选A。