Ключевые слова: academy, adult, background, beautiful, caucasian, chalk, chalkboard, class, classroom, college, comprehensive, education, english, esl, explaining, female, foreign, grammar, green, happy, indoors, international, job, knowledge, language, learn, learning, lesson, listening, person, portrait, professional, reading, room, rule, school, skill, smiling, speaking, student, studying, subject, teach, teacher, teaching, tutor, university, woman, work, writing,