英语单选 ，在线等，要详细原因
Ifthewholeoperation_beforehand,agreatdealoftimeandmoneywouldhavebeenlostAwasnotplanne...
If the whole operation_beforehand,a great deal of time and money would have been lost
A was not planned B has not been planned
C were not planned D had not been planned 展开
A was not planned B has not been planned
C were not planned D had not been planned 展开
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d 看后半句的意思，表示倘若。。。就会损失大量的时间和资金。事实上是没有损失的，而倘若的内容表示过去的一种假设， 关键是would have been done 的理解。
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