On the flight would be delayed, we made other arrangements.
A. being informed
B. informed
C. informing
D. having informed
网友回答
(答案→)A. being informed
B. informed
C. informing
D. having informed
解析：“on+名词/-ing形式”可用于表示“在……的时候，一……就”；inform通知，告诉。此处与其逻辑主语存在着被动关系，故用being informed。