he didn't know -- waht the matter was what was the matter 请解

选 waht the matter was
这是个宾语从句,后面接的是从句,从句应该用陈述语气
再问： 可是答案是what was the matter ，我就搞不懂噢
再答： 我错了，是what was the matter 他是个特例不倒装 及时修改，还好
再问： ？？是waht the matter was ？？ 怎么特例那
再答： ？？？？ what was the matter
再问： 好无语，一般都是what the matter was 他不知道发生什么事了？不是这样的么。怎么会 what was the matter他不知道那个事是什么？各位解答下吧
再答： what was the matter是what is the matter的过去时态，是发生了什么事 在并与从句中他是个特例，不到装 再有问题Hi我吧，追问要财富值了