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    科目： 来源：不详 题型：单选题


    We won’t give up _______ we should fail ten times.
    A．even ifB．sinceC．whetherD．until

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    科目： 来源：不详 题型：单选题

    ___    _ I feel pity on them, I can’t really do very much to help them but contribute my pocket money.
    A．WhileB．As long asC．WhenD．Where

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    科目： 来源：不详 题型：单选题

    —Did you return Fred’s call?
    —I didn’t need to ____ I’ll see him tomorrow.
    A．thoughB．unlessC．whenD．because

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    科目： 来源：不详 题型：单选题

    The companies are working together to create ______ they hope will be the best means of transport in the 21st century.
    A．whichB．thatC．whatD．who

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    科目： 来源：不详 题型：单选题


    　　Would you like a cup of coffee ______ shall we get down to business right away ?
    A．andB．thenC．orD．otherwise

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    科目： 来源：不详 题型：单选题


    They were surprised that a child should work out the problem ________ they themselves couldn't.
    A．once B．then C．WhileD．if

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    科目： 来源：不详 题型：单选题


    A computer can only do ________ you have instructed it to do.
    A．howB．afterC．whatD．when

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    科目： 来源：不详 题型：单选题


    You should try to get a good night’s sleep_________much work you have to do.
    A． howeverB． no matterC． althoughD． whatever

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    科目： 来源：不详 题型：单选题


    The changes in the city will cost quite a lot, ___________they will save us money in the long run.
    A． orB．sinceC．forD．but

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    科目： 来源：不详 题型：单选题


    _______________you call me to say you’re not coming, I’ll see you at the theatre.
    A． ThoughB． WhetherC． UntilD． Unless

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