问题描述： walking they quickly are 连词成句 1个回答 分类： 英语 2014-12-03 问题解答： 我来补答 they are walking quickly 再问： 再问一个啊 song is the boy singing a 连词成句 再答： the boy is singing a song 请采纳~再问： 最后一个啊 reading the book man a is 再答： the man is reading a book 展开全文阅读