Ключевые слова: ancient, antique, art, background, book, brown, buy, concept, dirty, dump, ecology, education, environment, garbage, group, head, heap, high, knowledge, learn, leisure, library, literature, male, man, object, old, open, page, paper, pile, read, recycle, retro, rubbish, sack, save, schoolbooks, set, stack, stand, study, table, textbook, throw, trash, useless, waste, white,