这个地方的家务活简直是没完没了。

The housework in this place is just ___never-ending.

这看起来像是一个永无止境的故事。

It really appears to be a ___never-ending story.

工作和睡眠的永无止境的循环可能令人疲惫。

The ___never-ending cycle of work and sleep can be exhausting.