Thank you for all your hard work last week. I don't think we ______ it without you.A.can manageB.could have managedC.could manageD.can have managed
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B解析本题考查情态动词的用法。根据关键词without you和last week可知，此题应采用与过去事实相反的虚拟语气。句意为：如果没有你上周的辛勤工作，我就不能完成这项工作。could not have managed it意为“（过去）本来不能做而做成了”。故选B。