ＩstillrememberthedaywhenIsaidgoodbyetomyfamily,

问题详情：

 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

【回答】

C

知识点：非谓语动词

题型：选择题