Ключевые слова: blank, book, class, classroom, college, computer, cover, desk, document, education, elementary, experiment, hard, homework, knowledge, lab, laboratory, laptop, learn, learning, lesson, library, math, mathematics, no people, note, notebook, notepad, office, page, paper, pen, pencil, problem, research, school, showing, student, study, studying, suggest, supply, table, teacher, test, university, work, workplace, write, writing,