问题描述: 以下动词的第三人称单数形式、现在分词和过去式:flystudyopendiehope 1个回答 分类:英语 2014-10-06 问题解答: 我来补答 flies flying flewstudies studying studiedopens opening openeddies dying diedhopes hoping hoped 展开全文阅读