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    So far no life has been found outside the earth, but while some scientists are actively searching for living things in outer space, others firmly believe there . A. mustn’t be B. may not be C. can’t be D. won’t be 【查看更多】

     

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     So far no life has been found outside the earth, but while some scientists are actively searching for living things in outer space, others firmly believe there ____ .

    A. mustn’t be                B. may not be               C. can’t be             D. won’t be

     

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    So far no life has been found outside the earth, but while some scientists are actively searching for living things in outer space, others firmly believe there ______.

    A. mustn’t be

    B. may not be

    C. can’t be

    D. won’t be

     

    查看答案和解析>>

    So far no life has been found outside the earth, but while some scientists are actively searching for living things in outer space, others firmly believe there ____ .

    A. mustn’t be 　　 B. may not be

    C. can’t be 　　　　　 D. won’t be

     

    查看答案和解析>>

    So far no life has been found outside the earth, but while some scientists are actively searching for living things in outer space, others firmly believe there ____ .

    A. mustn’t be 　　 B. may not be

    C. can’t be 　　　　　 D. won’t be

     

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    So far no life has been found outside the earth, but while some scientists are actively searching for living things in outer space, others firmly believe there ______.


    1. A.
      mustn’t be
    2. B.
      may not be
    3. C.
      can’t be
    4. D.
      won’t be

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