问题补充：
The poor living in the mountain top is covered with green trees.
A. are; which
Bare; of which
C. is; whose
D. are; whose
答案：
A. are; which
B. are; of which
C. is; whose
(答案→)D. are; whose
解析：本题考查主谓一致和定语从句。the poor=poor people，其谓语用复数形式;the top of the mountain相当于whose top。
