Ключевые слова: 3d illustration, back, background, blackboard, board, business, chair, chalkboard, class, classroom, college, contemporary, decor, design, desk, education, elementary, empty, exam, floor, furniture, green, high, indoors, inside, interior, knowledge, learn, lecture, lesson, light, modern, nobody, office, room, school, seat, seminar, student, study, style, table, teacher, teaching, training, university, white, window, wood, wooden,