他们的礼貌给我们留下了深刻印象。

We were impressed by their ___politeness.

她的成功部分归功于她真诚的礼貌。

Her success is due in part to her genuine ___politeness.

在所有社交互动中，基本的礼貌是必需的。

Basic ___politeness is expected in all social interactions.