题目内容
If there are ________ trees, the air in our city will be ________ cleaner.
A. less; more
B. more; more
C. more; much
D. much; much
答案:C
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题目内容
If there are ________ trees, the air in our city will be ________ cleaner.
A. less; more
B. more; more
C. more; much
D. much; much