All flights （）because of the storm, they decided to go to Beijin

All flights （）because of the storm, they decided to go to Beijing by train.

having been canceled

had been canceled

having canceled

were canceled

由于暴风雨，所有的航班都取消了，他们决定乘火车。考察独立主格结构，句子已经有谓语动词，排除BD，flights和cancele之间为被动关系，故选A。