Combining with the three points pointed out of the question, transfer the chimney which is used to emit polluted gas into the one that is offer greenland and green oxygen to the citizen (is a good solution 作为谓语和宾语)
Combined with the problems presented in the three points, will discharge pollution gas chimney into to provide the public green space, green oxygen environment protection chimney
Combined with the three points presented in the problems, the chimney will be changed from discharging pollution gas chimney into the public green space providing and oxygen environment protecting one.
combine with the three points of the problem,change the chimneys that discharge the pollution gas into the pro-environment chimneys that can supply greenbelt and oxygen gas for citizens