12．We will be shown around the city：schools，museums，and some other places， other visitors seldom go．
A. what
B. which
C. where
D. when
网友回答
A. what
B. which
(答案→)C. where
D. when
解析：此题考查的是where引导非限制性定语从句。先行词places在从句中逻辑上充当go的状语，所以用关系副词where。what不能引导定语从句；先行词在从句中作主语和宾语时才能使用关系代词that；先行词是地点，而非时间，不能用when。