Question

It is very kind _____ you to help me with my lessons. It is difficult _____me to learn them well.

A．of , of

B． for , of

C．of , for

D．for , for

Answer 1

C

考查固定句型。It is +adj. of/for sb. to do sth.當形容詞是指人時，用介詞of；指物時用介詞for。Kind“友好的”，指人，故用of；排除B、D；difficult“困難的”，指事情，用for。故選C。