be sure of

In that way one is sure of accepting no humbug.

如是一人不至被骗。

The examination was a pushover; I'm sure of all the answers.

"那次考试很容易,题目的答案我全都有把握。"

He likes to be sure of his bodily comforts.

他注重物质上的舒适。

When you adduce evidence of this nature, you must be sure of your sources.

在提供实质性的证据,的来源。

I rarely flinch from a fight when I'm sure of myself.

信自己，我很少怕斗争。

She looked over her shoulder to be sure of her footing.

她扭头看了看后面以认自已是否站稳了。

He is sure of himself.

他很自信。