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    精英家教网 > 高中英语 > 题目详情
    Half an hour has been made full ______ of _____ the problem.
    A．using; studyingB．use; to studyC．to use; to studyD．use; studying
    B

    试题分析：考查固定词组和句子结构。固定词组make full use of充分利用，本句是被动语态；第二空的不定式做目的状语。句意：半个小时已经被充分利用了来研究这个问题。故B正确。
    点评：固定词组make full use of充分利用，本句是被动语态；第二空的不定式做目的状语。
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