It’s important _______ us __________English well.
A. of, learning      B. for, to learn         C. of, to learn

It’s important _______ us __________English well.

A. of, learning      B. for, to learn         C. of, to learn

 It’s important _______ us __________English well.
　　     A. of, learning      B. for, to learn         C. of, to learn 

 It’s important ______ us _______ English well.

A of, to learn  B for, to learn   C to, to learn     D  with, learning