问题补充:
Because of air pollution being greatly reduced, this city is still .
A. a good place which to be lived in
B. lived as a good place
C. a good place to live in
D. living in as a good place
答案:
A. a good place which to be lived in
B. lived as a good place
(答案→)C. a good place to live in
D. living in as a good place
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