【题目】I have a strong desire to visit the old castle, _______ is painted red.
A.whose doorB.the door of whomC.whose the doorD.of which door
在线课程【答案】A
【解析】
考查定语从句。句意：我特别渴望住在老城堡里，那里的门是红色漆的。通过分析句子结构可知，主句先行词是the old castle，在从句中作the door of的宾语，因此使用the door of which或者whose door引导非限定性定语从句。故选A项。