—I called you yesterday evening, but there was no answer.
—Oh, I’m sorry. I dinner in my friend’s home.
A. have
B. will have
C. was having
D. have had
网友回答
A. have
B. will have
(答案→)C. was having
D. have had
解析：此题重点过去进行时的基本结构和基本用法。根据对语句的理解，再打电话时“我“正在朋友家吃晚饭，表示在过去是某个时间里正在进行的动作。