It’s important us to protect the environment and it’s wise us to save water .A. for fo

问题补充：

It’s important us to protect the environment and it’s wise us to save water .

A. for , for

B. of , of

C. for , of

D. of , for

答案：

A. for , for

B. of , of

(答案→)C. for , of

D. of , for

解析：句意：本题考查It’s +形容词+of/for sb to do句型以及give up词组的用法。当形容词表示客观情况，形容这件事本身时，用for句型，如 It’s difficult for me to learn Japanese.指的是学日语这件事情困难。而当形容词表示主观感情或态度，说明人的性格品质时，用of句型，如It’s kind of you to help me.你是善良的。故选C。