YOU SAID:
what have i done to offend you so
INTO JAPANESE
私はあなたを怒らせるために何をしたか
BACK INTO ENGLISH
What did I do to make you angry?
INTO JAPANESE
私はあなたを怒らせるのに何をしましたか?
BACK INTO ENGLISH
What did I do to make you angry?
You've done this before, haven't you.