她突然发怒并开始大喊大叫。

She ___lost ___her ___cool and started shouting.

你不应该在孩子面前突然发怒。

You should never ___lose ___your ___cool in front of your children.

他在危机中保持冷静，没有突然发怒。

He managed to keep calm and not ___lose ___his ___cool during the crisis.