Ключевые слова: abc, alphabet, book, busy, caucasian, concentrated, concept, copybook, culture, education, educational, fiction, fingers, focused, hands, holding, homework, idea, information, intellectual, knowledge, learn, lesson, letters, library, literature, looking, male, man, memo, model, note, novel, paperwork, people, person, read, remark, school, stack, student, study, studying, test, textbook, training, university,