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    精英家教网 > 高中英语 > 题目详情
    -- I’m exhausted. I _____ on a project day and night.
    -- You’d better have several days off after finishing it. Otherwise you might break down.
    A．workedB．have worked
    C．workD．have been working
    D

    试题分析：考查时态：句意：--我很累，我整天都在忙着这个计划。-结束后你最好休息几天，否则你会垮掉的。说明做这个项目是从过去到现在说话的时候一直进行的，有可能还要继续，用现在完成进行时，A是一般过去式，表示纯粹的过去的动作，B是现在完成时，表示过去的动作对现在的影响，C是一般现在时，表示一贯的行为，所以选D。
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