What surprises us most is that she doesn't even know that the difference between the two lies.对不

问题描述:

What surprises us most is that she doesn't even know that the difference between the two lies.对不

改正:去掉that
解释:know后面的宾语是the difference between the two lies,它只是一个名词短语,而不是一个宾语从句,所以that多余(后面已经有了the了).