is very important for us to learn English well.A. ThatB. ThisC. ItD. All

问题补充：

is very important for us to learn English well.

A. That

B. This

C. It

D. All

答案：

A. That

B. This

(答案→)C. It

D. All

解析：句意：对我们来说学好英语很重要。这是一个固定句式，It’s＋形容词for sb. to do sth.对某人来说做某事……。it是形式主语，真正的主语是不定式，故选C。