Ключевые слова: 20s, adult, african, campus, candid, casual, caucasian, class, classroom, college, copyspace, desk, diverse, education, ethnic, exam, female, focus, group, helping, hispanic, inside, learning, lifestyle, looking, male, man, modern, natural, note, notebook, online, people, person, professor, real, school, serious, showing, sitting, student, studying, table, teacher, test, together, university, woman, writing, young,