Question

【题目】—I phoned you at 7:00 this morning. But there was no answer.

—Well, maybe I _________ morning exercises at that time.

A. was doing B. did C. is doing D. would do

Answer 1

【答案】A

【解析】

试题句意：今天早上7点钟我给你打电话。但是没人接。恩，可能那个时候我正在做早锻炼。at that time在那个时候，表示过去的某个点时间，所以句子要用过去进行时的形式，故选A