IN some big cities,__is done to make smoke clean before it g

IN some big cities,__is done to make smoke clean before it g In some big cities,is done to make smoke clean before it goe In some big cities,little is done to make smoke clean before little is done to make dirty water clean before it goes into father will ___ me to some big cities in the south next mont He found some people (eating) hamburgers in some big cities Sometimes it's hard to park cars in big cities. Once an old Sometimes it's hard to park cars in big cities.Once an old m 英语翻译sometimes it is hard to park cars in big cities.once an In many cities like Moscow,Paris and some big cities in Chin Nancy wants to visit some big cities.(根据划线部分提问(划线部分是some big why not clean your room out to make it ___?---I ;LL do it in