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。