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      in the city for thirty years, the old man moved back to the countryside．

A．Having worked        B．Working         C．To have worked         D．To work

_______ in the city for thirty years, the old man moved back to the countryside.

._______in the city for thirty years,the old man moved back to the countryside.

  A.Having worked    B．Working    C．To have worked    D．To work

_________in the city for thirty years, the old man moved back to the countryside.

       A．Having worked   B．Working     C．To have worked       D．To work

_______in the city for thirty years, the old man moved back to the countryside.

       A．Having worked       B．Working   C．To have worked       D．To work

_______ in the city for thirty years, the old man moved back to the countryside.

       A．Having worked       B．Working   C．To have worked       D．To work

_______ in the city for thirty years, the old man moved back to the countryside.

_________in the city for thirty years, the old man moved back to the countryside.