题目内容：
Air pollution __________ , this city is still a good place to live in.A、being greatly reduced
B、greatly being reduced
C、to greatly reduce
D、greatly to reduce
参考答案：
选择题：Air pollution __________ , this city is still a go
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- 题目类型：选择题
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A、being greatly reduced
B、greatly being reduced
C、to greatly reduce
D、greatly to reduce