问题补充:
The house, walls are red, is where my grandfather used to live ten years ago.
A. which
B. of which
C. whose
D. that
答案:
A. which
B. of which
(答案→)C. whose
D. that
解析:考查非限制性定语从句:句意:墙体是红色的房子是我祖父前住的地方。这是非限制性定语从句,先行词是the house,定语从句中的walls缺少定语用whose引导定语从句,名词+of which也可以引导定语从句,但是名词walls前面要加定冠词the,所以选C。