问题描述: i____was happy to hear that news.(certain) 1个回答 分类:英语 2014-12-06 问题解答: 我来补答 certainly用副词的形式I was happy to hear that news.不缺任何成分如果句子不缺任何成分,那么加一个副词时没有错误的 展开全文阅读