Steamboat Ski Area

I need to change passages liabilities and present tense and past or active.

It would be great if you could change it as an example, but also explain why so I can do the rest myself.

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A Pennsylvania man died while skiing at the ski resort of Steamboat, but authorities say they have not determined the cause of death. Mark Joseph Stout, 45, was found dead on a ski run on the middle Sunday. Officials say there were no obvious signs of trauma.

thanks

A Pennsylvania man died while skiing at the ski resort of Steamboat, but authorities say they have not yet determined the cause of death. Mark Joseph Stout, 45, was found dead on a ski run on the middle Sunday. Officials said there were no obvious signs of trauma.