问题
选择题
---I called you yesterday evening, but there was no answer.
----- Oh, I’m sorry. I _____ dinner at a restaurant at that time.
A．have
B．had
C．was having
D．have had
答案
答案：C
考查时态。句意：昨天晚上我给你打电话，但是没人接。噢，很抱歉，我当时正在饭馆吃饭。根据题中的时间状语at that time 时过去进行时的语法标志之一，所以选C。