Question

【题目】—I called you last night, but no one answered.

—I’m sorry. I ____ dinner at that time.

A. have B. had C. have had D. was having

Answer 1

【答案】D

【解析】句意：——昨天晚上我给你打电话，但是没人接。——很抱歉，我当时正在吃晚饭。A. have一般现在时；B. had一般过去时；C. have had现在完成时；D. was having过去进行时。时间状语at that time 是过去进行时的语法标志之一，故答案为D。