Ключевые слова: 30s, academic, answer, blackboard, boy, career, caucasian, class, classmates, classroom, college, economic, education, educator, female, fun, girl, group, high school, indoors, knowledge, laughing, learning, lecture, lesson, marketing, middle, person, pupil, question, school, smiling, social media, standing, student, studying, teacher, teaching, teen, teenage, teenager, together, tutor, woman,