-Has Sam finished his homework today?-Yes.He ______ it this morning.A.did B.has done C.was doing D.had done

分类: 作业答案 • 2021-12-19 16:34:52

问题描述：

-Has Sam finished his homework today?-Yes.He ______ it this morning.
A.did B.has done C.was doing D.had done

答