28.다음 중 어법에 맞는 문장은? 1.She is the girl that can help you. 2.I have a book which are interesting. 3.This is a dictionary who is so cheap. 4.This is the woman who work at the bank. 5.This is the book that explain how to use computer. 2,3,4번은 틀린거 알겠는데 1번이랑 5번이 ㅠㅠㅜㅜ