Ключевые слова: airport, blue, box, business, cabinet, classroom, close, college, combination, design, door, education, file, gym, hall, hallway, high, keep, key, lock, locker, lockers, metal, museum, nobody, number, object, office, open, padlock, pool, public, room, row, safe, safety, school, secure, security, shut, space, sport, station, steel, storage, store, student, stuff, swimming, wall,