◎ 题干
Leonardo da Vinci(1452 - 1519)         birds kept in cages in order to have the pleasure of setting them
free.   
[     ]
A. is said to be buying              
B. is said to have bought    
C. had said to buy                  
D. has said to have bought
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Leonardo da Vinci(1452 - 1519) birds kept in cages in order to have the pleasure of setting themfree.[ ]A. is said to be buying B. is said to have boughtC. h…”主要考查了你对  【不定式的完成式】  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。