All flights ______ because of the storm, they decided to take the train

来源:百度知道 编辑:UC知道 时间:2024/06/19 01:35:29
A. were cancelled
B. have been cancelled
C. having been cancelled
D. having cancelled

为什么

C,这是独立主格结构,相当于with all fights having been cancelled,在语法关于非谓语中可查到
fights 和cancel 之间关系为被动排除AC,如果答案为B,标点应为句号。

B