Ключевые слова: 20s, assisting, beautiful, casual, caucasian, child, childhood, class, classroom, concentrating, concentration, cute, desk, drawing, education, educational, elementary, encouraging, girl, grade, happiness, happy, helping, homework, indoors, learn, learning, lecture, lesson, listening, pretty, primary, pupil, scholar, school, schoolgirl, sitting, smiling, student, studying, sweet, talking, teacher, teaching, together, tutor, two people, woman, writing, young,