He plained that this was the third time he of the changes of the meeting.
A. is informed
B. was informed
C. has been informed
D. had been informed
网友回答
A. is informed
B. was informed
C. has been informed
(答案→)D. had been informed
解析：考查句型：this was the third time 后用过去完成时态，句意：他抱怨这是第三次他被告诉会议的变化了。所以选D。