Ключевые слова: adults, attractive, blackboard, board, campus, casual, caucasian, cheerful, class, classmates, classroom, college, diversity, education, female, friendship, group, happiness, intelligence, lecture, lesson, lifestyle, listening, men, people, person, portrait, positivity, school, school desks, smile, smiling, student, students, study, studying, teacher, teamwork, teenage, teenager, teenagers, teens, together, unity, university, women, young, youth,