regret|regretted|regretting

你做了一个好决定，所以你不应该后悔。

You made a good decision, so you shouldn't ___regret it.

她接受了那份工作邀请，这是一个她后来后悔的决定。

She accepted the job offer, a decision she later ___regretted.

我后悔昨晚熬夜的决定。

I am ___regretting my decision to stay up late last night.