他让我的生活变得非常艰难，但我会报复的。

He's made life very difficult for me, but I'll take my ___revenge.

他试图向那些背叛他的人复仇。

He sought ___revenge against those who had betrayed him.

他发誓要向那个毁了他生活的人复仇。

He swore ___revenge against the man who had ruined his life.