Ключевые слова: answer, back, blackboard, board, boy, caucasian, chalk, chalkboard, children, class, classmates, classroom, college, education, friendship, girl, grade, green, group, hands, happy, kid, learning, lesson, lifestyle, math, people, pupils, question, raised, ready, school, school child, school children, school girl, schoolchild, schoolkid, success, teacher, teenager, textbook, together, trainee, training, up, vote, voting, white, writing, young,