问题描述: My sister always ----- her homework at home.a.do b.does 1个回答 分类:英语 2014-10-21 问题解答: 我来补答 my sister always does`````楼主记住she/he是第三人称所以要用 does、ps 除了情态动词 如 can may must等等还有,to 展开全文阅读