Lucy likes English very much . She does her best it well.A. to learnB. learnC. learningD.

问题补充：

Lucy likes English very much . She does her best it well.

A. to learn

B. learn

C. learning

D. is learning

答案：

(答案→)A. to learn

B. learn

C. learning

D. is learning

解析：句意：露西非常喜欢英语。她尽最大努力把它学好。动词不定式做目的状语表示具体的将要进行的动作，结合语境可知选A。