他最近工作压力太大，开始掉头发了。

He's been under so much stress at work that he's ___lost his hair.

她因为紧张在辩论赛中输了。

She ___loses the debate because of nervousness.

她在车祸中失去了丈夫。

She ___loses her husband in a car accident.

他在压力下很容易失去镇定。

He easily ___loses his composure under pressure.