Ключевые слова: back, back school, back to school, background, blackboard, board, book, cheerful, child, children, class, classroom, education, emotion, female, funny, girl, green board, happy, kid, knowledge, learn, learning, lesson, little, people, positive, preschool, preschooler, pretty, primary, pupil, school, school time, schoolchild, schoolchildren, schoolgirl, schoolkid, smart, smile, smiling, student, study, studying, success, young,