as best one can
as best one can {adv. phr.}
As well as you can; by whatever means are available; in the best way you can.
The car broke down in the middle of the night, and he had to get home as best he could.
George's foot hurt, but he played the game as best he could.
The girl's mother was sick, so the girl got dinner as best she could.
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Source: A Dictionary of American Idioms
