问题描述: They are talking.①改为否定句.②改为疑问句.(有答句)③把这个句子改为提问. 1个回答 分类:英语 2014-10-07 问题解答: 我来补答 they are not talkingare they talking?yes,they are.no they aren'twhat are they doing 展开全文阅读