Ключевые слова: 30s, african american, age, appointment, ask, at, black, board, book, class, classroom, collage, college, course, education, exam, female, for, front, group, happy, high, high school, learning, lecture, lesson, man, notebook, occupation, person, presentation, pupil, school, seminar, smiling, standing, student, students, study, studying, teacher, teaching, team, technology, teenager, test, tutor, university, woman, young,