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_____around the Water Cube, we were then taken to see the Bird’s Nest for the 2008 Olympic Games.

    A. Having shown    B. To be shown    C. Having been shown    D. To show

___around the Water Cube, we were then taken to see the Bird’s Nest for the 2008 Olympic Games.

     around the Water Cube, we were then taken to see the Bird’s Nest for the 2008 Olympic Games.

    A．Having shown B．To be shown  C．To show  D．Having been shown