问题描述： they play the piano after school.变一般疑问句,做肯定否定回答 1个回答 分类： 英语 2014-10-06 问题解答： 我来补答 一般疑问句 Do they play the piano after school?肯定：Yes ,they do.否定：No, they don't. 展开全文阅读