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    Experts think we won’t have clean water to drink unless something soon,but much remains about environment protection. A.would be done;doing B.is done;to be done C.will be done;to do D.is done;to do 【查看更多】

     

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           Experts think we won’t have clean water to drink unless something_______ soon, but much remains_______ about environment protection.

    A. would be done; doing                                B. is done; to be done    

    C. will be done; to do                                    D. is done; to do

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    Experts think we won’t have clean water to drink unless something　　　 soon,but much remains　　 about environment protection.

    A、would be done;doing　　 B、is done;to be done　　

    C、will be done;to do　 D、is done;to do

     

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    Experts think we won’t have clean water to drink unless something　　 soon,but much remains　　 about environment protection.

    A、would be done;doing　　 B、is done;to be done　　

    C、will be done;to do　　 D、is done;to do

     

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