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My Enlish-Chinese dictionary has disappeared,who ---have tak

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My Enlish-Chinese dictionary has disappeared,who ---have taken it?
我觉得应该填can或could
疑问句中表推测吧
My Enlish-Chinese dictionary has disappeared,who ---have tak
因为已经不见了
所以是对过去的推测
must have done是对过去的猜测
而could have done 就是说“本能够做到什么”(隐含当时没能达到这个能力)