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    9．Although not too many people A/H1N1 in the world so far.we had better not go to the crowds．A．caught B．has caughtC．have caught D．have been caught 【查看更多】

     

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    Although not too many people _________ A/H1N1 in the world so far，we had better not go to the crowds．

    A．caught                           B．has caught

    C．have caught                       D．have been caught

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