问题描述: I think the most useful invention is car.(变否定句、划线提问的结构、反义疑问句) 1个回答 分类:英语 2014-10-15 问题解答: 我来补答 I don't think the most useful invention is car.What do you think the most useful invention is?I think the most useful invention is car,don't you? 展开全文阅读