The smiths _____(have)supper when we entered in.

问题描述:

The smiths _____(have)supper when we entered in.
上面打错了,这个才是:The smiths _____(have)supper at home when we entered it.
教材答案上写的是:was having
为什么?

were having
当我进来时,斯密斯一家人在吃晚饭.用过去进行时
不明白的再问哟,请及时采纳,多谢!