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    科目： 来源：北京会考题 题型：单选题

    — What're you planning to do in the future?
    — No idea. After all, I still have three terms to go _____ I graduate.

    [     ]

    A. before
    B. when
    C. if
    D. since

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    科目： 来源：陕西省同步题 题型：单选题

    Experts are trying to work out a plan to deal with the problems caused by global warming________
    it is too late.
    [      ]
    A. when  
    B. if  
    C. before  
    D. until

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    科目： 来源：同步题 题型：单选题

    We’ll not attend his party _____ we are invited.
    [     ]
    A. on condition      
    B. unless      
    C. whenever        
    D. as though

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    科目： 来源：福建省同步题 题型：单选题

    The man entered the room and looked everywhere ________ in search of something.
    [     ]
    A. so that  
    B. even if
    C. as if
    D. in case

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    科目： 来源：浙江省月考题 题型：单选题

    Scientists say it may be five or ten years ______ it is possible to test this medicine on human patients.

    [     ]

    A. since
    B. when
    C. after
    D. before

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    科目： 来源：0114 月考题 题型：单选题

    I would never speak to someone like that _____ they said something unpleasant to me.

    [     ]

    A. even if
    B. so that
    C. as if
    D. ever since

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    科目： 来源：同步题 题型：单选题

    The little girl who got lost decided to remain ________ she was and wait for her mother.
    [     ]
    A. where  
    B. what
    C. how  
    D. who

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    科目： 来源：同步题 题型：单选题

    They had no sooner arrived at the airport ________ it was time to check in.
    [     ]
    A. when  
    B. before
    C. than  
    D. though

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    科目： 来源：同步题 题型：单选题

    How I miss you! It's over a month ________ I last saw you.
    [     ]
    A. when  
    B. since
    C. until  
    D. before

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    科目： 来源：同步题 题型：单选题

    ________ life pace continues to speed up, we are quickly losing the art of enjoyment.
    [     ]
    A. With  
    B. When
    C. As  
    D. While

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