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    精英家教网 > 高中英语 > 题目详情
    She says that she'll have to close the shop ________ business improves.
    A．ifB．unlessC．afterD．when
    B

    试题分析：考查连词：A. if如果，B. unless除非，如果不，C. after在…后面，D. when当…时候，句意：她说她将不得不关掉商店，如果生意没有改善的话。选B。
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