The discovery of gold in Australia led thousands to believe that a fortune___.

问题描述:

The discovery of gold in Australia led thousands to believe that a fortune___.
A is made
B would make
C was to be made
D had made
为什么不选b

be to do sth/ happen = be doomed to happen/ be destined to happen or wil definitely happen/ do sth.注定……,必定……,
……误导了成千上万的人,认为发财是铁定了.