I went into a park, and sat down to try to think it out, and to consider what I had best do.

我来到一个公园坐下来，想理清头绪，看看我怎么办才好。

youdao

He knew where I fitted in and what he had to do to get the best out of me.

他知道我在哪里能发挥作用，以及他怎样做才能发挥我的最佳水平。

《柯林斯英汉双解大词典》

Nana had no doubt of what was the best thing to do with this shadow.

娜娜知道要怎样处理这个影子。

youdao

I've had all three, so I think I would say, "Get yourself some fresh legs, I've had the opportunity to do the best that I can do. I'm very prond of it, and I'll be glad to help you find somebody else who will feel the same way.

现在我三个职位都担任过了，给你自己找点新伙计吧，我有机会尽我所能,做到自己满意，我感到很自豪，我非常乐意帮助你找到其他,会和我的感觉一样的人。

普林斯顿公开课 - 国际座谈会课程节选

Without money I had to do the best with what I had.

FORBES: Brooklyn Nets to Hold Sneaker-Themed Art Competition Judged by Rapper Fabolous

Since then their lives were what they had become: knowing what to do, how best to do it, acquiring what had to be acquired, managing.

NEWYORKER: The Woman of the House

As Barnsley, his teacher, once put it, a rural artisan simply had to do his best.

ECONOMIST: Alan Peters