this is the school where/in whicn i studied five years ago.可以变成 that i studied in five ago吗?

问题描述:

this is the school where/in whicn i studied five years ago.可以变成 that i studied in five ago吗?
this is the school where/in whicn i studied five years ago.可以变成this is the school that i studied in five ago吗?或this is the school i studied five years ago吗?

this is the school i studied five years ago.我觉得这个可以.