—Did you see the traffic accident on East Street this morning?— Yes I shopping with my f

问题补充：

—Did you see the traffic accident on East Street this morning?

— Yes, I shopping with my friend Tina at the time.

A. have gone B. am going C. was going

答案：

解析：此题重点考查过去进行时的基本结构和基本用法，表示在过去的某一时间正在进行的动作或存在的某种状态，其构成是was/were+doing。