who _______your dog when you were not at home?look after
人气：479 ℃ 时间：2019-10-11 05:42:46
解答
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...
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