English is difficult. Nobody can learn to use it in a few minutes.A. learningB. to be lear

问题补充：

English is difficult. Nobody can learn to use it in a few minutes.

A. learning

B. to be learned

C. learned

D. to learn

答案：

A. learning

B. to be learned

C. learned

(答案→)D. to learn

解析：考查非谓语动词。在“主语+be+形容词+不定式”句型中,有时主语是不定式结构的逻辑宾语,这是应用主动形式表示被动含义。适合于此结构的形容词比较多,最常用的有amusing(有趣的), cheap(便宜的), dangerous(危险的), difficult(困难的), easy(容易的), important(重要的), nice(令人愉快的), pleasant(愉快的)等,故用D。