问题补充：
If you work hard, it’s not difficult for you English well.
A. learn
B. learns
C. to learn
D. learning
答案：
A. learn
B. learns
(答案→)C. to learn
D. learning
解析：
试题分析: 句意：如果你努力工作，对你来说学好英语不难。learn学会，it’s +adj+for somebody to do sth,对于某人来说做某事是……的，固定句型，故选C.
