promise的名詞是什麼

例句：

We promise to deliver within 48 hours.

我們承諾在48小時內送到。

Promise me you will not waste your time.

向我承諾你不會浪費你的.時間。

I promise I am in this for the long haul.

我保證我會堅持到底。

If you make a promise, you should keep it.

如果你許下一個諾言，你就應該遵守它。

He reneged on a promise to leave his wife.

他背棄了諾言，離開了他的妻子。