这是个虚拟语气.因为显然"a great deal of time and money would have been lost"这个事情没有发生.而且这是一个对过去的虚拟.结构为"if +过去完成时,xx情态动词的过去分词+完成时.".
这道题的选项有哪些另外三个是was not planned, has not been planned和were not planned。我选了第三个。我觉得应该是，had not been taken in,你这个答案确实有问题，刚我在网上搜了一下，原题是If the whole operation ______ beforehand,a great deal of time and money would have been lost.a.was not planned b.has not been plannedc.had not been plannedd.were not planned答案选的C，希望能帮到你，你可以找个时间和老师讨论一下。