put back the book---it was when you leave the reading roomA as B there C where D like

问题描述:

put back the book---it was when you leave the reading room
A as B there C where D like

C where
当你离开阅览室时,请把书放回它原来所在的位置。

C

放回这本书——是当你离开阅览室

  C where

  从属连词where连接的地点状语从句。

选C,这里所要表达的是地点.

离开阅览室时,请把书归回原处.