我已尽我所能帮助他。

I ___do ___everything ___in ___my ___power ___to help him.

我们尽一切所能确保顾客满意。

We ___do ___everything ___in ___our ___power ___to ensure customer satisfaction.

该慈善机构尽一切所能向灾民提供救济。

The charity ___does ___everything ___in its ___power ___to provide relief to disaster victims.