어제 아들이풀고 나서 왜 답이 5번인지 잘 모르겠다네요... 자긴 3번 인것 같다는데...
혹시 on which 가 아니라서 틀린건가??? 하며 막연하게 생각하다가... 설명을 들었으면 좋겠다는데..
엄마인 저는 아는게 없고... 이곳 게시판밖에 문의 드릴곳 이 없네요...
자세한 설명 좀 부탁드려도 될까요???
1. 다음 글의 밑줄 친 부분 중, 어법상 틀린 것은?

in the past, young athletes would play hockey or baseball. today, they want risk and excitement ―the ① closer to the edge, the better. more and more young athletes are taking part in risky activities ② called ‘extreme sports’ or ‘xsports’ such as mountain biking, snowboarding over cliffs, and bungee jumping. extreme sports have become a whole new area of sports, with a high level of skill and specialized equipment to allow athletes ③ to improve their performance. there’s even a special olympics for extreme sports ④ including snow mountain biking and ice climbing. an x-games competition is held each summer in rhode island. it features sports like sky surfing ⑤ which people jump from airplanes with surfboards attached to their feet.