완성하다 complete (sentence by filling out or artwork by finishing the last part)
ex) 노화가는 자신의 필생의 그림을 완성했다, The old painter succeed in carrying out his life masterpiece.
빈칸을 채워 문장을 완성하시오. Complete the sentence by filling out the blank.
완료하다 finish, done or carry out (something in designated period)
ex) A 기업은 B 항구 공사를 완료했다. A company finished the project of A harbor.
해내다 carry out or pull off (challenging or diffcult things)
ex) 어려운 도전을 극복 해내다. I carried out the difficult challege.
필하다 complete or finish (one's duty or responsibility)
ex) 군필후 다시 오디션에 도전하였다. After finishing his military service, he applied for the audition.