问题
选择题
---I called you yesterday evening, but there was no answer.
---Oh, I am sorry I _____dinner at my friend’s house.
A．have
B．had
C．was having
D．have had
答案
答案：C
根据文章内容I called you yesterday evening, but there was no answer.可知答案为C，用于过去进行时，故选C