YOU SAID:

I just put up a Christmas tree in my living room, library, and bedroom

INTO JAPANESE

私はちょうど私のリビングルーム、図書館、寝室にクリスマスツリーを置いた

BACK INTO ENGLISH

I just put a Christmas tree in my living room, library and bedroom

INTO JAPANESE

私はちょうど私のリビングルーム、図書館、寝室にクリスマスツリーを置く

BACK INTO ENGLISH

I just put a Christmas tree in my living room, library and bedroom