Ключевые слова: america, autumn, back, background, bear, beautiful, book, cover, day, document, education, exchange, fall, field, flag, garden, grass, green, hardcover, information, knowledge, library, literature, loop, nature, object, old, open, outdoor, page, paper, pen, pencil, program, school, stack, stand, study, summer, sunset, table, teddy, text, toy, university, usa, vintage, wisdom, wood, wooden,