The emergency required that all the tasks at least two days ahead of time A．to complete

发布时间：2020-08-16 13:54:07

The emergency required that all the tasks      at least two days ahead of time．
A．to plete   B．should plete  C．be pleted Dshould have been pleted

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解析：考查虚拟语气。句意：紧急需要要求所有任务必须最少提前两天完成。“should+have+done”意思是“本来应该做某事，而实际没做。Task是被完成的对象，故用被动语态，选C。
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