prep 08的一道例题

zhengyi5828790

2. Darwin was not the first to advance a theory of evolution; his tremendous originality lay in the fact that he proposed the idea of natural selection as the means by which evolution worked.
(A) lay in the fact that he proposed the idea
(B) lay in the fact of his proposing the idea
(C) laid in the fact of his proposing the idea
(D) laid in his proposal
(E) lay in his proposal
答案选择 E  
难道原句中不需要用第三人称单数形式吗？ 请求指点，谢谢！

sisichen666

LZ是想问主语单复数的问题吗？his tremendous 为后半句的主语。。为复数主语。。。。

zhengyi5828790

谢谢，我觉得这里的lay是 lie的过去式，我后来突然晃过神来了……