Ключевые слова: auditorium, blue, board, business, chair, chalk, chalkboard, class, classroom, college, conference, day, design, desk, education, elementary, empty, free, furniture, grade, green, high, highschool, indoors, instruction, interior, learn, lecture, lesson, modern, nobody, office, presentation, room, row, school, seat, student, study, studying, table, teach, think, training, vacation, weekend, white, window, wood, work,