Thank you for all your hard work last week. I don’t think we it without you. A. can mana

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A. can manage
(答案→)B. could have managed
C. could manage
D. can have managed
解析：此题考查情态动词表示虚拟意义的用法。I don’t think…是否定前移。意为：我认为没有你我们本不能做成这件事的。此题关键是要根据句意知道是虚拟语气，其基本形式是情态动词（过去式）+have done,所以其他选项皆可排除。