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    30．Our government has done a lot to solve the shortage of oil.but it may take some time we have enough． A．after B．since C．unless D．before 3l．He has got a high fever and his mother insisted that he to see a doctor． A．will go B．would go C．go D．went 【查看更多】

     

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    Our government has done a lot to solve the shortage of oil，but it may take some time     we have enough．

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

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