Theemergencyrequiredthatallthetasks_____atleasttwodaysaheadoftime．A.t

发布时间：2020-08-14 02:03:02

The emergency required that all the tasks _____ at least two days ahead of time．A.to pleteB.should pleteC.be pleted
D.should have been pleted

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C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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