Hi all,
Please take a look on the attached SC problem. It's from Manhattan SC - Style.
After the renovations, the museum boasted a new atrium-style entrance, to which having been added wooden panelling and the artwork of several notable American painters.
The OE is:
wooden panelling and the artwork of several notable American painters having been added to it.
In the end, the correct part has HAVING BEEN, which I think is incorrect. It should be WERE ADDED. The panellings and artworks were added and the action is over. So, why HAVING BEEN.
Can someone explain this usage of HAVING BEEN?