다음 문장을 영어로 알맞게 옮긴 것은?회의실은 21층에 있습니다. 1. The meeting room is on the 21th floor. 2. The meeting room is at the 21st floor. 3. The meeting room is on the 21st floor. 4. The meeting room is at the 21th floor.☞ 비서직 시험대비 기출문제 바로가기