Ключевые слова: academic, back, boy, career, caucasian, child, childhood, class, classmate, classroom, college, desk, development, doctor, door, education, elementary, elementary school, female, girl, group, happy, indoors, kid, knowledge, learn, learning, lesson, listening, medicine, medicine lesson, occupation, online lecture, person, primary, pupil, rear view, school, schoolchild, sitting, smiling, student, studying, teacher, teaching, together, uniform, video calls, woman, young,