—What were you doing when I called you a

问题选择题

—What were you doing when I called you at 8 p.m. yesterday?

—I the piano at that time.

A．play

B．is playing

C．played

D．was playing

答案

答案：D

题目分析：句意：- 昨天我八点给你打电话是你在做什么？那时我正在弹钢琴。at that time在那时，过去进行时的时间标志，其结构是：were/was+doing,故选D。