练习册

  • 练习册
  • 试题
    The wreckage of something like a jet plain discovered in the heart of the desert is believed a UFO and down for reasons still mysterious. A. to be; have fallen B. to have been; to have fallen C. to be; to fall D. having been; having fallen There are about fifteen hundred languages in the world. 【查看更多】

     

    题目列表(包括答案和解析)

    The wreckage of something like a jet plain discovered in the heart of the desert is believed ______ a UFO and _______down for reasons still mysterious.

    A．to be; have fallen

    B．to have been; to have fallen

    C．to be; to fall

    D．having been; having fallen

     

    查看答案和解析>>

    The wreckage of something like a jet plain discovered in the heart of the desert is believed ______ a UFO and _______down for reasons still mysterious.

    A．to be; have fallen

    B．to have been; to have fallen

    C．to be; to fall

    D．having been; having fallen

     

    查看答案和解析>>

    The wreckage of something like a jet plain discovered in the heart of the desert is believed ______ a UFO and _______down for reasons still mysterious.     
    [     ]
    A. to be; have fallen  
    B. to have been; to have fallen  
    C. to be; to fall  
    D. having been; having fallen

    查看答案和解析>>

    The wreckage of something like a jet plain discovered in the heart of the desert is believed ______ a UFO and _______down for reasons still mysterious.

    　 A. to be; have fallen B. to have been; to have fallen C. to be; to fall D. having been; having fallen

     

    查看答案和解析>>


    同步练习册答案