YOU SAID:

Where did I put my keys this time?

INTO JAPANESE

今回私の鍵はどこに置いたのですか？

BACK INTO ENGLISH

Where did you put my key this time?

INTO JAPANESE

今回はどこに鍵を置いたのですか？

BACK INTO ENGLISH

Where did you put the key this time?

INTO JAPANESE

今回はどこにキーを置いたのですか？

BACK INTO ENGLISH

Where did you put the key this time?