Why ( ) the teacher let him ( ) the classroom yeserday afternoon _英语解答

Why ( ) the teacher let him ( ) the classroom yeserday afternoon A did.to clean B does.clean还有两个

人气：267 ℃　时间：2020-02-01 08:10:54

解答

填 did clean
因为有yesterday,是过去时,助动词用did
let sb do .后面动词用原形