YOU SAID:

They finished building the road they knew no one would ever use.

INTO JAPANESE

彼らは、誰も使用しないとわかっていた道路の建設を終えました。

BACK INTO ENGLISH

They have finished building a road that no one knew would use.

INTO JAPANESE

彼らは誰もが使うとは知らなかった道路の建設を終えました。

BACK INTO ENGLISH

They finished building a road that no one knew would use.

INTO JAPANESE

彼らは誰もが使うとは知らなかった道路の建設を終えました。

BACK INTO ENGLISH

They finished building a road that no one knew would use.