Ключевые слова: back, background, blackboard, caucasian, cheerful, child, childhood, children, class, classmates, classroom, college, cute, desk, education, elementary, female, friendship, girl, globe, grade, green, group, hands, kid, learn, learning, lesson, lifestyle, little, mask, math, people, pupil, pupils, raised, school, school child, school children, school girl, schoolchild, schoolgirl, schoolkid, sitting, teenager, textbook, together, white, young,