Did they clean the house esterday?_____They cleaned it at five.A.NO,they didn't.B.Yes,they did

问题描述:

Did they clean the house esterday?_____They cleaned it at five.A.NO,they didn't.B.Yes,they did
顺便帮我翻译一下最后一句话

选a,不,他们是五点打扫的