Ключевые слова: advertisement, back to school, backdrop, black, blackboard, blank, blue, board, brown, capital letter, chalkboard, circle, classroom, communication, composite image, computer graphic, connection, copy space, cube shape, digital, digital composite, digitally generated, digitally generated image, display screen, education, effect, empty, flare, flash, global business, globe, glow, graphic, gray, handwriting, indoors, landline phone, learning, leisure games, lens flare, light, light natural phenomenon, mobile phone, outdoors, phone, planet, school, shape, shine, single word, sphere, studio shot, sustainable resources, text, texture, textured, time, triangle shape, variation, wall, western script, white, white background, wood, wooden, world map,