Ключевые слова: asking, attendee, audience, auditorium, back, business, businessman, businesspeople, computer, conference, congress, connected, course, crowd, dark, event, from behind, hall, information, international, internet, knowledge, laptop, leadership, learning, male, man, meeting, microphone, motivation, network, online, people, portrait, presentation, professional, program, question, seminar, skill, social, speaker, speech, summit, talk, tech, technology, training, workshop, world,