问题描述: open live sit study call的现在分词、第三人称单数形式、过去式各是什么? 1个回答 分类:英语 2014-11-24 问题解答: 我来补答 open live sit study call现在分词openning living sitting studying calling三单形式opens lives sits studies calls过去式 opens lived sitted studied callde 展开全文阅读