She is stubborn in resisting his enquiries about the Moonstone _____ the degree that she makes it seem as if she does not want the mystery ______A.on; to solveB.with; solvingC.for; being solvedD.to; to be solved
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D解析本题考查介词及非谓语动词。to the degree是 达到……程度 的意思，the mystery与solve之间为被动关系，根据语境迷没被解决，故用不定式，选D。