Question

It’s very kind__________you to help me with my English．
一Not at a11．I think it is important____________us to help each other．

A．of，of

B．for，of

C．of，for

D．for，for

Answer 1

C

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。