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
网友回答
A. is said to be buying
(答案→)B. is said to have bought
C. had said to buy
D. has said to have bought
解析：“be said+不定式”是英语中一个很有用的结构，其意为“据说”，如：He is said to know many language. 据说他懂得许多语言。Mr. Brown is said to have died of liver cancer. 据说布朗先生死于肝癌。另外，由于Leonardo da Vinci生活在1452-1519，说明谈论的是过去的情况，故不定式用完成式。