Ключевые слова: air, background, book, bookshelf, bookstore, casting, classics, close, collection, college, colorful, cover, dictionary, document, education, expertise, falls, group, history, information, isolate, isolated, knowledge, learn, learning, library, literary, literature, new, object, page, paper, pile, read, reading, research, school, science, shadow, stack, study, text, textbook, university, up, varying, white, wisdom, writing,