问题补充：
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
答案：
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”
如果觉得《It was the third time that I of the changes of the timetable.A. had informedB. has informe》对你有帮助，请点赞、收藏，并留下你的观点哦！
