Ключевые слова: academy, adult, business, businessman, businesspeople, businesswoman, caucasian, class, classroom, colleague, college, colors, course, coworker, coworking, education, explaining, glass, glassboard, group, happy, indoors, knowledge, learn, learning, lesson, lifestyle, listening, management, marketing, men, office, people, positive, school, seminar, smile, students, study, studying, teach, teacher, team, teamwork, university, women, working, writing, young,