He spent much of the evening with Robert Green, __________he had hardly seen in the thirty years since they had worked together at CBS.

       A．what        B．that        C．which        D．whom

28．He spent much of the evening with Robert Green,____he had hardly seen in the thirty years since they had worked together at CBS.

       A．what        B．that   C．who  D．Whom

He spent much of the evening with Robert Green, __________he had hardly seen in the thirty years since they had worked together at CBS.

       A．what        B．that        C．which        D．whom

He spent much of the evening with Robert Green, _________he had hardly seen in the thirty years since they had worked together at CBS.

       A．what        B．that   C．who  D．whom

He spent much of the evening with Robert Green,        he had hardly seen in the thirty years since they had worked together at CBS．

A．what            B．that          C．who          D．whom

 He spent much of the evening with Robert Green,        he had hardly seen in the thirty years since they had worked together at CBS.

       A．what                  B．that                     C．who                    D．whom

28．He spent much of the evening with Robert Green,____he had hardly seen in the thirty years since they had worked together at CBS.

He spent much of the evening with Robert Green, __________he had hardly seen in the thirty years since they had worked together at CBS.

 He spent much of the evening with Robert Green,        he had hardly seen in the thirty years since they had worked together at CBS.

    A．what             B．that         C．which          D．whom