in what order do you think they were invented?in 可以在该疑问句最后么?

题目

in what order do you think they were invented?in 可以在该疑问句最后么?
接上,即可以写成what order do you think they were invented in?么,为什么,请写出详尽解释,
请说明为什么

答案

in 表示在...方面
invent 是"vt",后面不能加 介词