Ключевые слова: adult, advertisement, band, billboard, blackboard, book, camera, chalk, chalkboard, cheerful, class, classroom, cognition, concentration, confidence, confident, copy, development, digitally, education, empty, female, generated, graphic, holding, lady, learn, lecture, looking, person, portrait, presentation, profession, professor, school, science, screen, showing, smiling, space, standing, student, study, teach, teacher, think, thoughtful, university, woman, writing,