问题描述: tell me what was (happened)at 10.what did you see可以用happened吗 1个回答 分类:英语 2014-10-17 问题解答: 我来补答 不可以,因为happen 是不及物动词was happened 是被动语态了,不可以用happening 构成过去进行时 展开全文阅读