He________theArmybytheendof1989．

发布时间：2020-07-26 18:42:21

He ________ the Army by the end of 1989．He ________ in the army since then．A.joined; isB.has joined; has beenC.had joined; isD.had joined; has been

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D解析by引导时间状语表示“到……时为止”，用完成时态。到过去一个时间为止就用过去完成时。
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