Ключевые слова: above, background, black, blackboard, board, border, bulb, chalk, class, communication, concept, course, cryon, education, english, flat, flatlay, foreign, frame, green, language, lay, learn, learning, lesson, light, lightbulb, many, minimal, objects, overhead, rainbow, school, speak, stationary, study, studying, supply, text, top, view, word,