It`s important ( )us ( )English well.A.of,to learn B.for,to learn c.to,to learn D.with,learning

问题描述:

It`s important ( )us ( )English well.
A.of,to learn B.for,to learn c.to,to learn D.with,learning

B
It's+adj.for sb. to do sth.

B

B
It+be动词+形容词+for sb+to do sth
固定用法