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    精英家教网 > 初中英语 > 题目详情
    Sam will make more progress if he__________harder.

    A. will work
    B. was working
    C. works
    D. worked
    C
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    科目：初中英语 来源：同步题 题型：单选题

    Sam will make more progress if he__________harder.
    [     ]
    A. will work
    B. was working
    C. works
    D. worked

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