Ключевые слова: after, back, boy, child, childhood, children, class, classmates, classroom, college, development, during, education, elementary, girl, grade, grading, group, help, helping, high, homework, interest, kid, learning, lesson, notebook, people, private, project, public, pupils, school, schoolboy, schoolgirl, sitting, student, table, teacher, teaching, teenager, teenagers, tests, workshops, youth,