Ключевые слова: book, call, caucasian, cellphone, chat, cheerful, child, childhood, children, conference, cyberspace, desk, distance, education, finger, gesture, girl, good, greeting, happy, home, homework, kid, laptop, laughing, learning, lesson, like, little, mobile, ok, online, phone, portrait, positive, pupil, remote, school, schoolgirl, schoolkid, sitting, smartphone, smiling, studying, table, thumb up, using, video, webcam, young,