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    精英家教网 > 高中英语 > 题目详情
    --- I haven’t seen Mary recently. And you?
    --- Me neither. I’m afraid she _________ to her experiment for too long a time.
    A．is devotingB．was devotedC．has been devotingD．has been devoted
    D
    考查时态。固定词组be devoted to致力于。根据上下文可知我最近没有空间Mary,是因为她致力于做实验。使用完成时表示过去发生的事情对现在的影响。
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