.I knew him better,I discovered that my impression had been right.A.Which B.As C.Until D.Unle

题目

.I knew him better,I discovered that my impression had been right.A.Which B.As C.Until D.Unle
D.Unless

答案

B,As为正确选项.
句子的意思是,“随着我对他的不断了解,我发现原来（对他）的印象是对的”.这里的as引导时间状语从句,“随着...”.其它选项都不符合题意.