Значение идиомы do one’s best

[do one’s best] {v. phr.} To perform at one’s optimum capacity; spare no effort in fulfilling one’s duties.

«I’ve really done my best teaching you people,» the tired professor said on the last day of classes. «I hope you got something out of this course.»



My future profession топик.
The geographical position of the usa.


Значение идиомы do one’s best