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    It is an UFO. 【查看更多】

     

    题目列表(包括答案和解析)

    It is _______ unusual thing for us to find ________ UFO.

    A．a; aB．an; anC．a; anD．an; a

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    It is _______ unusual thing for us to find ________ UFO.

    A．a; a              B．an; an            C．a; an             D．an; a

     

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    It is _______ unusual thing for us to find ________ UFO.
    A．a; aB．an; anC．a; anD．an; a

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    It is _______ unusual thing for us to find ________ UFO.


    1. A.
      a; a
    2. B.
      an; an
    3. C.
      a; an
    4. D.
      an; a

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    It is _____ unusual thing for us to find _____ UFO.  
    [     ]
    A. a; a             
    B. an; an        
    C. a; an      
    D. an; a

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