Ключевые слова: age, back, backpack, books, boys, building, caucasian, cheerful, childhood, children, corridor, early, education, elementary, females, friends, girls, gray, group, hall, hallway, happy, holding, indoors, inside, kids, knowledge, learning, males, mixed, people, primary, pupil, race, red, school, schoolboy, schoolchild, schoolgirl, september, small, student, studying, talking, uniform,