Ключевые слова: academy, adult, american, background, blackboard, books, caucasian, class, classroom, college, desk, education, english, esl, explaining, flag, foreign, grammar, happy, indoors, job, knowledge, language, learning, lesson, male, man, person, portrait, profession, professional, reading, school, smiling, speaking, states, student, studying, table, teacher, teaching, textbook, tutor, united, university, us, work, workbook, working, writing,