Ключевые слова: back school, book, bookcase, books, bookshelf, child, childhood, children, classroom, clever, concerned, cute, day, earth, educate, education, elementary, geography, globe, go, homework, idea, intelligence, kid, kids, knowledge, learn, learner, learning, lesson, library, preschool, primary, pupil, scholar, school, schoolboy, schoolchild, schoolkid, serious, shelf, smart, student, study, studying, teaching, think, thinking, thoughtful, world,