Ключевые слова: answer, ask, blackboard, board, caucasian, chalk, chalkboard, cheerful, child, childhood, class, classmate, classroom, clever, cognition, desk, education, elementary, exam, female, formula, genius, girl, indoor, intelligence, kid, knowledge, learning, lecture, lesson, little, portrait, preschooler, pupil, remember, school, schoolchild, schoolgirl, schoolkid, serious, sitting, smart, standing, student, study, table, teacher, thinking, woman, writing,