YOU SAID:
I forgot the new key of their neighbors' house
INTO JAPANESE
私は隣人の家の新しい鍵を忘れた
BACK INTO ENGLISH
I forgot the new key of my neighbor's house
INTO JAPANESE
私は隣人の家の新しい鍵を忘れた
BACK INTO ENGLISH
I forgot the new key of my neighbor's house
You love that! Don't you?