puzzles me most is that I don’t know the difference between the two lies.A. What howB.

问题补充：

puzzles me most is that I don’t know the difference between the two lies.

A. What, how

B. What, where

C. That, what

D. How, which

答案：

A. What, how

(答案→)B. What, where

C. That, what

D. How, which

解析：主要测试主语从句和宾语从句第二空由句子 the difference between the two lies可知缺少的应该是地点状语，因此答案为B。译文：最让我迷惑的是我不知道两者之间的区别在哪儿。