문제 내용: 어법상 옳은 것은?
선택지 1: While worked at a hospital, she saw her first air show.
선택지 2: However weary you may be, you must do the project.
선택지 3: One of the exciting games I saw were the World Cup final in 2010.
선택지 4: It was the main entrance for that she was looking.