Ключевые слова: back, background, book, bookmark, bookstore, business, circle, club, college, colorful, copy, courses, culture, diary, edition, education, empty, first, group, imagination, isolated, knowledge, learning, leisure, library, literature, multicolored, open, page, paper, paperwork, practice, publication, rainbow, reading, school, science, skill, space, spring, stack, student, study, studying, success, teamwork, text, textbook, training, university,