Ключевые слова: autumn, back, background, black, blackboard, board, book, books, chalk, chalkboard, class, classroom, closeup, college, color, colorful, concept, copy, educate, education, elementary, eraser, europe, free, green, information, knowledge, leaf, learn, lesson, pen, pencil, reading, red, school, space, student, study, studying, symbol, table, teach, teacher, text, textbook, university, vintage, white, write, year,