Ключевые слова: 1216, activity, afroamerican, boy, casual, caucasian, children, class, communication, course, different, diligence, education, effort, elementary, ethnicity, european, exam, friendship, girl, group, happy, humanitarian, indoor, kids, laughing, learning, lesson, many, mixed, multiethnic, notes, people, portrait, positive, pupil, relaxed, school, science, sitting, smiling, students, studying, taking, teacher, teenage, together, training,