Ключевые слова: academic, adult, background, basic, board, brick, caucasian, chalk, chalkboard, class, classroom, college, do, education, english, eyeglasses, female, foreign, grammar, green, happy, indoors, information, inscription, instructor, international, knowledge, language, learn, lesson, person, profession, professional, professor, school, showing, smiling, speak, study, teach, teacher, teaching, text, training, tutor, university, woman, young,