Such hard work can make people dog-tired.

VOA: special.2010.05.30

I'm really tired and I have a lot of school work to catch up on.

我真是累坏了，我还有许多落下的功课得补起来。

I'd like 实战 - SpeakingMax英语口语达人

Let's say that you've been at work all day and you are really tired.

假设你已经工作了一整天，你已经精疲力尽了。

so that 课堂 - SpeakingMax英语口语达人