When we hurried to the theatre the concert for five minutes.A. had been onB. had begunC.

问题补充：

When we hurried to the theatre, the concert for five minutes.

A. had been on

B. had begun

C. had begun on

D. began

答案：

(答案→)A. had been on

B. had begun

C. had begun on

D. began

解析：句意：当我们匆忙的赶到剧院的是时候，音乐会已经上演了5分钟了。For+一段时间表示谓语动词用表示状态的be on 上演上映when 引导的时间状语助于用过去完成式从句用一般过去式。故选A