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-Where on earth have they gone?-I have no idea, but I wish I .A.knowB.knewC.woul

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-Where on earth have they gone?-I have no idea, but I wish I .A.knowB.knewC.woul

—Where on earth have they gone?

—I have no idea, but I wish I          .

A.knowB.knewC.would knowD.would have known

试题答案

B

解析