分类：教育/科学-外语学习
问题：英语A:Icalledyouatabout11a.m.,butt 
A: Icall you at about 11 a.m.,but there was no answer .  B: Oh ,Iam sorry . I ____ lunch with my friends in a restaurant . 1  have 2 had  3  was having  4  had  had  ..解题思路　感谢
回答： 因为有about 11 a.m，问在特定的时刻发生的事，只是这一点，应该是过去进行时。所以选3.was having