I've been on the run all day and I'm exhausted.

我忙了一整天，累极了。

《牛津词典》

I'd love to, but I'm exhausted.

我很想去，但是我太累了。

youdao

I keep practicing even when I'm exhausted.

即使在我筋疲力尽的时候，我还是坚持练习。

youdao

I'm so exhausted that I can't do exercise anymore.

我累得再也没法锻炼了。

so that 课堂 - SpeakingMax英语口语达人

I'm exhausted, and afternoon thunderstorms-an absolute no-no for small planes--are in the forecast.

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Yet there are still days when I'm exhausted by negotiating the gap between my expectations of what's possible and the reality.

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To a military spouse, that's just Wednesday. (Laughter.) So I'm just exhausted thinking about them.

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