Ключевые слова: 15s, activities, boy, busy, children, class, classmates, computer, concentrated, educating, education, european, headphones, indoors, informatics, information, kids, knowledge, learning, lesson, lifestyle, male, mechanical, middle, pastime, people, person, portrait, pupil, room, russian, school, schoolboy, schoolchildren, schooling, schoolroom, studying, table, teenager,