________ more energy to my study instead of being crazy about Internet games, I would be sitting in a fortable office now.A.If I devotedB.Had I devotedC.Would I be devotedD.Should I be devoted
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B解析考查虚拟语气。本句是混合虚拟语气。主句与现在是相反，从句与过去是相反。故用过去完成时，因为从句中含有had，故可以将if去掉，把had提到前面来。