问题描述: 句子改错:It is a pity that they left their bags at the station.错在哪儿,为什么错,请修改 1个回答 分类:英语 2014-11-06 问题解答: 我来补答 It (was) a pity that they left their bags at the station.时态为过去式,前后时态一致. 展开全文阅读