It was the third time that I of the changes of the timetable.
A. had informed
B. has informed
C. had been informed
D. has been informed
网友回答
A. had informed
B. has informed
(答案→)C. had been informed
D. has been informed
解析：句型考查题。It was +序数词+that sb had done sth “这是某人第几次做某事”