【题目】It had the dusty smell of an apartment ________ windows were rarely opened.
A. that B. which
C. where D. whose
在线课程【答案】D
【解析】
考查定语从句。句意：它有很少开窗透气的公寓里的灰尘的味道。________ windows were rarely opened.是定语从句，先行词是an apartment，先行词在从句中作定语修饰名词windows，表示所属，故用whose。在定语从句中AC项通常不能作定语，which作定语时，后面通常接time和case。故选D项。