答案：C

题目分析：考查时态。句义：在澳大利亚的黄金的发现让成千上万的人相信要发财了。A. I made 一般过去时B. would make过去将来时C. was to be made 表过去将来且命中注定D. had made 过去完成时，根据句义是过去完成时，所以AD不对，根据题干黄金的发现所以注定要发财，所以C正确。