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