无论谁打破了窗户，都得为此付款。

___Whoever broke the window will have to pay for it.

请问我能和负责国际销售的人谈谈吗？

Could I speak to ___whoever is in charge of international sales, please?

我必须承认，发明汽车的人创造了世界上最好的发明。

I have to admit that ___whoever invented cars produced the best invention in the world.