who _______your dog when you were not at home?look after

问题描述:

who _______your dog when you were not at home?look after

had looked after.were表示为过去时,所以照顾应该是过去完成时,所以用had

looked after

was looking after

looked after 用过去时,因为were是过去时。

因为后面的时间状语从句中,用了过去式were,所以前面也要用过去式.look after是一个介系词动词,它的过去式只要在动词look上面作变化就可以了,这是一个规则动词,只要在look后面加上-ed就可以了,这道题填的是looked aft...