问题
选择题
The disappearance of dinosaurs made _______ the evolution and dominance of mammals on the earth.
A．it was possible
B．it possible
C．possible to be
D．possible
答案
答案：B
此题考查：made it possible ，it 做形式宾语，真正的宾语是后面的名词短语，此类结构还有：find/think/make + it +形容词/to do/that 从句，所以选B。