时态题:what_you_(do)last night when i called you?

问题描述:

时态题:what_you_(do)last night when i called you?
请说明理由

were…doing,题目是说,昨天我打电话时你在做什么?肯定是进行时,因为是打电话这一时间,再就是过去时,所以用过去进行时,手机打英语很累啊…