问题描述： 他们去年是牙医们.肯定句 否定句 疑问句 答句（Yes、No） 1个回答 分类：英语 2014-11-09 问题解答： 我来补答 肯定句 They were dentists last year.否定句 They weren't dentists last year.疑问句 Were they dentists last year?答句 Yes,they were .No,they weren't ） 展开全文阅读
