Who helped you clean the classroom?Daming( ).( ）中是did还是was?rt,为什么
问题描述：
Who helped you clean the classroom?Daming( ).( ）中是did还是was?
rt,为什么
答
你好: Who helped you clean the classroom? Daming( did ). 因为前面已经有了行为动词 help 后面有主语 Da ming 谓语动词需要助动词 即 Da ming helped me clean...