Ключевые слова: 25s, 30s, activities, adult, auditorium, back, caucasian, class, coach, college, course, coursemate, digital, educating, educational, emotion, explication, group, hall, indoors, intelligent, interacting, interest, lecturing, lesson, lifestyle, listening, man, networking, occupation, online, pc, person, positive, presentation, process, science, seminar, speech, student, studying, teacher, technologies, trainer, tutor, university, user, view, woman,