问题描述: students must go to school on time 否定句 一般疑问句 否定回答 what改句型 1个回答 分类:英语 2014-11-09 问题解答: 我来补答 Student needn't go to school on time.Must student go to school on time?No,they needn't.What student must do is that they must go to school on time. 展开全文阅读