那次事故后，他多年来一直备受负罪感的折磨。

He was tormented by a guilty ___conscience for years after the accident.

当你做出艰难决定时，你的良心曾让你不安吗？

Does your ___conscience ever trouble you when you make a difficult decision?

当她意识到自己的错误时，感到一阵强烈的良心不安。

She felt a sharp pang of ___conscience when she realized her mistake.