题目内容
按要求完成练习。
The wind carries sand from the deserts to the cities, so it causes air pollution．(改写句子)
→The wind carries sand from the deserts to the cities, ________ air pollution．
答案：causing
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题目内容
按要求完成练习。
The wind carries sand from the deserts to the cities, so it causes air pollution．(改写句子)
→The wind carries sand from the deserts to the cities, ________ air pollution．