adult, background, blur, business, caucasian, close, communication, computer, concept, desk, digital, focus, hand, hands, home, homework, internet, job, keyboard, laptop, lifestyle, male, man, modern, notebook, office, online, pc, people, person, shopping, sitting, student, table, technology, teenager, typing, up, using, wireless, work, working, young, juvenile, excavation, profession, portable computer, school assignment, engineering, medium, radio, furnishing, concentration, business activity, age group, network, adolescent, personal computer, system, writing, machine, application, book, furniture, on-line, life style, someone, telecommunication, computer network, assignment, attention, difficulty, faculty, end, buying, upwards, purchase, acquiring, undertaking, youth, broadcasting, pupil, enrollee, grownup, problem, upward