volcanoes now for many years, I am still as enthusiastic about my job as the first day I f

发布时间:2020-08-17 01:38:23

    volcanoes now for many years, I am still as enthusiastic about my job as the first day I first    .
A. Studied, started
B. Have studied, started
C. Having studied, started
D. Having studied, starting

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A. Studied, started
B. Have studied, started
(答案→)C. Having studied, started
D. Having studied, starting
解析:考查分词做状语和时态。第一空中的动词study与句子主语I之间构成主动关系,使用现在分词的形式,因为该动作发生在谓语动作之前,使用完成式。第二空是指第一天开始的时候,那么使用一般过去时。句意:研究火山多年以后,我仍然像开始研究的第一天一样充满热情。故C正确。
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