It’s necessary us English well.A. for to learnB. for learningC. of learningD. of t

问题补充：

It’s necessary us English well.

A. for , to learn

B. for , learning

C. of , learning

D. of , to learn

答案：

(答案→)A. for , to learn

B. for , learning

C. of , learning

D. of , to learn

解析：

试题分析:强调句式， It is adj for sb to do sth，做某事对某人来说怎么样。本句中it是形式主语，指代后面不定式内容做形式主语，注意for后面接表示人的对象,to后面接动词,故选A。