我已经在三个不同的场合请他调低音乐音量。

I've asked him to turn his music down on three ___separate occasions.

我尽力将工作和个人生活分开。

I try to keep my work and my personal life ___separate.

警方正在调查昨晚发生的两起互不相关的袭击事件。

Police are investigating two ___separate attacks that happened last night.