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 有為了……的意思，多表示目的對(duì)象等。of ……的，多用來說明后接詞語的性質(zhì)屬性等關(guān)系。根據(jù)題意，它對(duì)我們來說很重要，選C。