问题描述： 用used to do sth造句2句话,然后变成疑问句、肯定句、否定句. 1个回答 分类：英语 2014-09-19 问题解答： 我来补答 He used to go home on foot.Did he use to go home on foot?He didn't use to go home on foot.She used to take a walk after supper.Did she use to take a walk after supper?She didn't use to take a walk after supper. 展开全文阅读
