她自信的举止给商务会议上的每个人留下了深刻印象。

Her ___self-assured demeanour impressed everyone at the business meeting.

一个好的领导者需要显得自信，即便在高压环境下也是如此。

A good leader needs to appear ___self-assured, even in high-pressure situations.

他以冷静自信的方式完成了这场复杂的演讲。

He delivered the complex presentation in a calm and ___self-assured manner.