问题描述：
Sometimes the pollution is thick .It is like a blanket over a city(用so .that.改写）
___ ____is so ____ that it is like a blanket over a city
___ ____is so ____ that it is like a blanket over a city
问题解答：
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补充回答：
The pollution is so thick that it is like a blanket over a city.
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2021-09-25