Ключевые слова: african american, book, boy, bts, casual clothing, classmate, classroom, closeup, college, computer, desk, discussion, education, explain, gadget, girl, group, high school, knowledge, laptop, learn, lecture, lecture hall, lesson, man, multiethnic, notebook, online, school, school building, school children, schoolboy, schoolgirl, student, study, table, teamwork, teen, teenage, teenager, textbook, together, university, woman, write, young,