To make our city greener and cleaner we need trees.A. more manyB. much moreC. more muchD

问题补充：

To make our city greener and cleaner, we need trees.

A. more many

B. much more

C. more much

D. many more

答案：

A. more many

(答案→)B. much more

C. more much

D. many more

解析：much可以用来修饰形容词的比较级。