“自己的”造句

她重振旗鼓去开创自己的事业了。
She dusted herself down and left to build her own career.

他命令他们把几个枕头叠放在自己的背后。
He ordered them to stack up pillows behind his back.

我们怎么知道你不只是在为自己的朋友遮掩呢？
How do we know you're not just covering up for your friend?