◎ 题干
The model for Leonardo da Vinci's Mona Lisa is believed ____ in the convent (修道院) at the age of 63 in 1542.
[     ]
A. to die
B. to have died
C. dying
D. having died
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The model for Leonardo da Vinci's Mona Lisa is believed ____ in the convent (修道院) at the age of 63 in 1542. [ ]A. to die B. to have died C. dying D. hav…”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。