Could it be in the room we had a talk last night you left your keys ?A. that; where B. in

问题补充：

Could it be in the room we had a talk last night you left your keys ?

A. that; where

B. in which; where

C. where ; that

D. where ; where

答案：

A. that; where

B. in which; where

(答案→)C. where ; that

D. where ; where

解析：考查定语从句和强调句型。本题第一空where we had a talk last night修饰先行词the room.第二空是强调句型的结构that。句意：就是在我们昨天谈话的难过房间里，你丢了钥匙吗？故C正确。