Ключевые слова: academic, blackboard, board, book, bored, boring, chalkboard, class, classroom, college, discussing, education, educational, exhausted, explaining, fatigue, girl, green, headache, high, knowledge, learn, learning, lecture, lecturer, lesson, man, migraine, presenting, pupil, reading, school, showing, speaking, strict, student, study, studying, talking, teacher, teaching, textbook, tired, trainee, training, tutor, tutoring, university, woman, young,