It’s important ________English well.

A．for us to learn

B．of us to learn

C．of us learning

D．for us learning

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

—It’s important ________ us _______ learn English well.

—I agree with you. We should try our best to learn it.

A. to,? to????????????? B. to,? for????????????? C. for,? to

It’s important _______ us __________English well.

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