John couldn't stay in the house which_(在粉刷)(paint)

John couldn't stay in the house which_(在粉刷)(paint)

John couldn't stay in the house which_was been painting (在粉刷)(paint)
过去进行时的被动语态.
约翰不能呆在正在粉刷（墙面）的房子里.

没有考虑到 couldn't这个时态，楼上正解

was been painting。