Ключевые слова: adolescence, backpack, beaker, beauty, boy, bubble, budget, cheerful, chemistry, child, children, classmate, classroom, concentration, confidence, cute, cyberspace, desk, discovery, ecstatic, education, elementary, enjoyment, excited, excitement, feeling, females, finance, friendship, fun, girls, happiness, holding, homework, horizontal, indoors, kids, learning, lifestyles, modern, people, research, school, science, smiling, student, studying,