– I called you yesterday evening but there was no answer.--Oh I am sorry. I dinner in m

问题补充：

– I called you yesterday evening, but there was no answer.

--Oh, I am sorry. I dinner in my friend’s home.

A. have

B. had

C. was having

D. have had

答案：

A. have

B. had

(答案→)C. was having

D. have had

解析：本句根据上下文的内容，表示那时，用过去进行时，故选答案为C