Ключевые слова: academic, angry, asking, blackboard, board, book, chalk, chalkboard, class, classroom, college, demonstrating, discussing, drawing, education, educational, explaining, girl, graduating, green, high, knowledge, learn, learning, lecture, lecturer, lesson, man, presenting, pupil, questioning, reading, school, showing, speaking, strict, student, study, studying, talking, teacher, teaching, teenager, textbook, trainee, training, tutor, tutoring, university, woman,