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___________for his expert advice, John is often asked to help others with their personal affairs.

         A．Having known             B．Being known      C．Known                 D．Knowing

_____for his expert advice, John is often asked to help others with their personal affairs.

       A．Having known        B．Being known

       C．Known            D．Knowing

___________for his expert advice, John is often asked to help others with their personal affairs.

       A．Having known        B．Being known    C．Known            D．Knowing

       for his expert advice, John is often asked to help others with their personal affairs.

A．Having known                                     B．Being known

C．Known                                               D．Knowing

        for his expert advice, John is often asked to help others with their personal affairs.

A．Having known                                     B．Being known

C．Known                                               D．Knowing

       for his expert advice, John is often asked to help others with their personal affairs.

___________for his expert advice, John is often asked to help others with their personal affairs.

 for his expert advice, John is often asked to help others with their personal affairs.

    A．Having known                     B．Being known   

    C．Known                            D．Knowing

  31        for his expert advice, John is often asked to help others with their personal affairs.

       A．Having known        B．Being known

       C．Known            D．Knowing