He lives in a room faces the south.A. whose windowsB. the window of whichC. whose the win

问题补充：

He lives in a room faces the south.

A. whose windows

B. the window of which

C. whose the window

D. of which the windows

答案：

A. whose windows

(答案→)B. the window of which

C. whose the window

D. of which the windows

解析：考查定语从句，先行词是a room，句意：他住在面朝南的房子里面。定语从句可以用whose windows或the window of which及 of which the windows，但因为定语从句的谓语是faces，所以window是单数。选B。