Ｉstill remember the day when I said goodbye to my family on the plane and started my jour

问题补充：

Ｉstill remember the day when I said goodbye to my family, on the plane and started my journey to London.

A. to step

B. stepping

C. stepped

D. having stepped

答案：

A. to step

B. stepping

(答案→)C. stepped

D. having stepped

解析：考查并列动词：句意：我还记得那天，当时我向家人告别，踏上飞机，开始我的伦敦之旅。Said，stepped和started是并列的动词，用过去时，选C。