Ключевые слова: 1, back, background, blackboard, celebration, chalk, chalkboard, children, classroom, college, color, congratulations, creative, day, drawings, drawn, education, event, festive, flat, green, greeting, happy, holiday, international, knowledge, lay, learn, modern, nobody, notebook, object, october, profession, pupil, school, september, stationery, student, study, supplies, teacher, text, top, university, view, work, world, written,