Ключевые слова: african, afro, american, black, college, concept, education, exam, file, giving, group, hall, hand, high, indoors, international, knowledge, learn, learning, lecture, man, many, multiethnic, multiracial, paper, people, person, school, sitting, student, study, studying, taking, teacher, teen, teenage, teenager, test, tutor, university, woman, young,