최선을 다하다

do one's best

→ 최선
phrase Common #4,405
do one's best Often used with 에 to mean “do one's best at” something, or with 해 to mean “by doing one's best.”
KO: 저는 ‘최선을 다하다’라는 마음으로 시험에 임할게요.
EN: I'll approach the exam with the intention of doing my best.