Question

--The mistake_____, I had been more careful.
---But you weren’t at that time.

A．might have avoided	B．would avoid
C．would be avoided	D．might have been avoided

Answer 1

D 

试题分析：句意：--如果我更加仔细一些，这个错误就会避免。--但是你当时没有。首先这个句子是个对过去情况的虚拟条件句，表示与过去事实相反的情况，if+主语+had done +其他+主语+should/would/could/might+have done+其他，所以排除BC，因为mistake和avoid是被动关系，所以选D。