Ключевые слова: active, activity, background, backgrounds, ball, blue, close, close up, closeup, competition, concepts, concepts topics, equipment, exercising, fun, green color, group of objects, healthy lifestyle, hobbies, leisure activity, lifestyles, line, match sport, motion, no people, object, playing, racket, serving sport, sport, sports ball, sports court, sports training, tennis, tennis ball, tennis racket, white color, yellow,