* 출처 : https://www.youtube.com/watch?v=y3DvZt-a3zA 라울선생님의 토익점수의 제곱상승 토익 어휘 실전 (Vol.1)13.토익 어휘 실전 문제 7회68. Raoul's reputation as an English teacher and writer was established _____ years of imagination and dedication for the education. (A) concerning (B) through (C) when (D) regarding