问题
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【C20】A.instructiveB.efficientC.beneficialD.profitable
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【C8】A.effectiveB.efficientC.affectionateD.moved
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The money I have saved is ____ for buying a car.A.proficientB.efficientC.potentialD.suff
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He is an ____ manager.A.proficientB.efficientC.potentialD.sufficient
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【C3】A.proficientB.efficientC.sufficientD.elaborate
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She is ______ at every aspect of the job; all she lacks is imagination.A.sufficientB.adequ