他真是个败家子，把所有的钱都花在没用的东西上。

He's such a ___waster, spending all his money on useless things.

那个学生是个懒散的人，整天都在教室里发呆。

That student is such a ___waster, always daydreaming in class all day.

这些旧报纸被当作废物扔掉了。

These old newspapers were thrown away as ___waste.