Question

If there are         trees, the air in our city will be         cleaner.

A．less, more

B．more, more

C．more, much

D．much, more

Answer 1

C解析:
此题考查形容词的比较级，根据题干的信息可知，树木越多城市就越干净many的比较级 是more，而在比较级的前面可以用much来修饰。