Ключевые слова: advertising, announce, announcement, antique, background, bar, billboard, black, blackboard, blank, board, breakfast, bulletin, business, cafe, chalk, chalkboard, class, classroom, color, drawing, dust, educate, education, empty, frame, free, learn, lesson, message, old, pattern, presentation, pub, retro, school, smudge, space, square, studying, teach, texture, textured, vintage, wood, wooden, work, write,