who is helping the teacher()the blackboard.A.cleaning B.clean C.cleans D.is cleaning

分类: 作业答案 • 2023-01-11 20:07:02

问题描述：

who is helping the teacher()the blackboard.A.cleaning B.clean C.cleans D.is cleaning
介四偶滴作业,急…………

答

help sb do sth
B