问题
选择题
For many cities in the world, there is no room to spread our further, _______ New York is an example.
A．for which
B．in which
C．of which
D．from which
答案
答案：C
of which引导的间隔性非限制性定语从句， 对cities起补充、说明的作用。介词of的选择取决于和前面名词的搭配 of the cities。