Hellow guys, Welcome to my website, and you are watching 2019년 9월 모평 수학(가) 20, 29번 문제 해설 영상 _ 화상과외 1등 수파자 서울대 김준연 선생님. and this vIdeo is uploaded by SUPAJA 수파자 at 2020-05-04T01:52:42-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.