问题描述: they exercise two hours a week.对two提问 ()()()do they exercise a week? 1个回答 分类:综合 2014-11-25 问题解答: 我来补答 对two提问,三个空子填(How)(many)(hours)对 two hours 提问,两个空子填(How)(long) 展开全文阅读