◎ 题干
Paul doesn't have to be made        . He always works hard.       
[     ]
A. learn    
B. to learn    
C. learning
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Paul doesn't have to be made. He always works hard,[ ]A. learnB. to learnC. learningD. learned…”主要考查了你对  【不定式】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。