I will put the bookyou placed it and make a mark at the placeI put it.A. where；at which B

问题补充：

I will put the bookyou placed it and make a mark at the placeI put it.

A. where；at which

B. at which；at which

C. where；which

D. at which；where

答案：

A. where；at which

B. at which；at which

C. where；which

D. at which；where

解析：A

解析前后两个从句都表示地点的含义。是定语从句还是地点状语从句，做题的关键是看有没有表示地点的名词作先行词。如果有表示地点的名词，就是定语从句；如果没有便是地点状语从句。该题中第一个从句为地点状语从句，第二个从句为定语从句，因此答案为A项。