问题
选择题
Most of the developing countries are faced with lots of troubles , _____the financial problem is not the worst .
A．which
B．with which
C．that
D．of which
答案
答案：D
考查非限制性定语从句。the financial problem和troubles是所属关系，应该用介词of；本句是非限制性定语从句。故选D。