The meeting by the time I got there yesterday.A. was onB. has been onC. had begunD. has b

问题补充：

The meeting by the time I got there yesterday.

A. was on

B. has been on

C. had begun

D. has begun

答案：

A. was on

B. has been on

(答案→)C. had begun

D. has begun

解析：考查时态。根据时间状语by the time I got there yesterday在我昨天到达那儿之前，可知用过去完成时连用。句意：在我昨天到达那儿之前，会议已经开始了。