Ключевые слова: age, blackboard, board, chalk, classroom, coat, college, crazy, education, elderly, emotion, equation, expression, fashion, fun, green, grey, guy, hair, happy, job, joy, knowledge, learn, lecture, leisure, lesson, lifestyle, male, man, mathematics, mature, model, old, pensioner, professor, retired, science, scientist, senior, spectacles, study, style, trendy, university, white, work, worker, write, writer funny,