Ключевые слова: academic, adult, beautiful, break, career, caucasian, class, classroom, clean, cleaning, closeup, college, desk, detergent, disinfecting, educate, education, educator, exam, exercise, explain, female, girl, indoors, job, knowledge, learn, learning, lecturer, lesson, occupation, people, person, profession, pupil, school, september, student, study, studying, subject, table, task, teach, teacher, tutor, wiping, woman, work, young,