他20岁时，永久地离开了家。

When he was 20, he left home ___for ___good.

他之前租这处房产，但永久地回到了斯里兰卡。

He was renting this property previously, but he went back to Sri Lanka ___for ___good.

意见不合后，他们永久结束了合作关系。

After the disagreement, they ended their partnership ___for ___good.