Ключевые слова: background, basket, bin, can, caution, cement, clean, cleaner, concept, container, decorate, design, do, dust, eco, ecology, environment, forbidden, garbage, human, keep, label, litter, littering, man, people, person, pollution, recycle, recycling, reuse, rubbish, sign, stone, symbol, throw, throwing, trash, wall, warning, waste,