Ключевые слова: backpack, boy, caucasian, cheerful, child, childhood, class, classmate, classroom, corridor, education, elementary school, elementary student, friend, friendship, front view, fun, girl, group, happiness, happy, horizontal, indoor, intelligence, laughing, learning, lesson, lifestyle, motion, person, pupil, running, school, school building, school children, schoolbag, schoolboy, schoolchild, schoolchildren, schoolgirl, schoolkid, smile, smiling, speed, student, teenage, together, walk,