Ключевые слова: adolescence, african, assignment, class, classmate, classroom, college, college classroom, college student, communication, conference, education, exam, girl, guy, high school, highschool, homework, knowledge, learn, learning, lesson, library, math, multiethnic, note, people, preparing, professor, school, schoolboy, secondary, student, study, studying, taking, teacher, teen, teenager, university, writing, young,