It’s very kindyou to help me with my English一Not at a11．I think it is importantus to help

问题补充：

It’s very kindyou to help me with my English．

一Not at a11．I think it is importantus to help each other．

A. of，of

B. for，of

C. of，for

D. for，for

答案：

A. of，of

B. for，of

(答案→)C. of，for

D. for，for

解析：for 有为了……的意思，多表示目的对象等。of ……的，多用来说明后接词语的性质属性等关系。根据题意，它对我们来说很重要，选C。