— I called you yesterday evening but nobody answered the phone.— Oh I a walk with my par

问题补充：

— I called you yesterday evening, but nobody answered the phone.

— Oh, I a walk with my parents at that time.

A. took

B. was taking

C. am taking

D. take

答案：

A. took

(答案→)B. was taking

C. am taking

D. take

解析：句意：昨天晚上我给你打电话了，但是没人接电话。——哦，那个时候，我正在和我的父母散步。结合语境可知下文描述的是过去某时正在进行的动作，故用过去进行时态。选B。