U2, the Irish rock band from Dublin perform a concert in Beijing, tell me in adv

_____ U2, the Irish rock band from Dublin perform a concert in Beijing, tell me in advance.

A. If           B. Shall            C. Should       D. Would

试题答案

C

解析:

should意思是“万一”，表示可能性，通常用于条件句中。如果省略掉if，通常把should提前。此句可还原成If U2, the Irish rock band from Dublin performs。