许多人在独自一人时找到平静。

Many people find peace when they are ___on ___their ___own.

假期期间，我更喜欢独自旅行。

During the holiday, I prefer to travel ___on ___my ___own.

他全靠自己完成了这个项目。

He completed the project ___all ___on ___his ___own.