Ключевые слова: adults, auditorium, back, background, blackboard, board, brown, business, campus, chair, chalkboard, class, classroom, coaching, college, conference, desk, education, elementary, empty, equipment, exam, furniture, high, inside, interior, knowledge, learn, lecture, lesson, light, modern, nobody, office, primary, room, school, seat, seminar, student, study, table, teacher, teaching, test, training, tutor, university, wooden,