她发誓要为被背叛的事情复仇。

She vowed to get ___revenge for the betrayal.

他发誓要复仇，因为那次背叛让他深受伤害。

He swore to seek ___revenge for the deep hurt caused by that betrayal.

这场胜利是对去年决赛失利的完美复仇。

This win was the perfect ___revenge for last year's final defeat.