Ключевые слова: blank, boy, childhood, children, class, classmate, classroom, concentrated, desk, education, elementary, exam, exercise, girl, grade, group, indoors, junior, kid, knowledge, learning, lesson, listening, little, occupation, part, people, person, preteen, primary, profession, public, pupil, school, schoolboy, schoolchild, schoolgirl, selective, sitting, study, studying, support, task, test, thinking, together, work, working, write, young,