Catherine Ⅱ had the Amber Room moved to a palace outside St. Petersburg she spent her sum

问题补充：

Catherine Ⅱ had the Amber Room moved to a palace outside St. Petersburg she spent her summers.

A. where

B. which

C. that

D. at which

答案：

(答案→)A. where

B. which

C. that

D. at which

解析：考查定语从句。本题的先行词是St. Petersburg，定语从句中的句子结构很完整，故使用关系副词where=in which。故A正确。