Ключевые слова: 20s, academic, adult, american, answer, attention, blackboard, class, classmates, classroom, college, course, coursework, desk, display, education, european, explain, female, friends, girl, group, learning, lecture, listening, look, many, notes, people, person, point, portrait, room, school, sitting, standing, student, study, train, training, university, watching, work, workplace, writing, young,