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    Three-fourths of the surface of the earth sea. are has been 【查看更多】

     

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    .Three-fourths of the surface of the earth_________sea.

          A.is                          B.are                            C.were                  D.has been

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     Three – fourths of the surface of the earth ______ sea.
      A. is      B. are        C.were       D. has been

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    .Three-fourths of the surface of the earth_________sea.

    A．is

    B．are

    C．were

    D．has been

     

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    Three-fourths of the surface of the earth＿＿＿sea．

    A．is     B．are      C．were     D．has been

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    Three-fourths of the surface of the earth＿＿＿sea．

    A．is B．are C．were D．has been

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