respect, yourselves to high grades is the best way.A. To earn, devote, achievingB. Earn, d

发布时间：2020-08-17 00:59:29

    respect,     yourselves to     high grades is the best way.
A. To earn, devote, achieving
B. Earn, devoting, achieve
C. To earn, devoting, achieving
D. Earning, devote, achieve

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A. To earn, devote, achieving
B. Earn, devoting, achieve
(答案→)C. To earn, devoting, achieving
D. Earning, devote, achieve
解析：整个句字已有谓语动词is，又没有连词故不能用谓语动词，排除B；动词不定式可以表目的。is前是主语，故用动名词短语，所以排除AD。to是介词后跟名词。故选C。
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