Ключевые слова: 20s, adult, authentic, candid, casual, class, classroom, college, computer, confident, content, copyspace, desk, diverse, education, ethnic, female, gesture, group, hand, happy, inside, laptop, learning, lifestyle, looking, male, man, modern, natural, online, paper, people, person, professor, real, school, sitting, smart, smiling, student, table, talking, teacher, tech, together, university, woman, writing, young,