the reason that i said that it only works 50% is that while i always wnet to church, (to do/doing) what my parents said and not what they did, my older sister was the exact opposite.여기서 답은 doing 인데요 왜 doing 이 답이고 to do는 안되는지 알려주세요..그리고 이런유형의 문제가 많이 출제되잖아요 이런유형문제 푸는 법 알려주세요.부탁드립니다.