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