| | Re: Which sentences sound more natural?
The second group of sentences all sound strange and ambiguous. First of all I don't understand "at the end" - do you mean they were winning all the way through but then suddenly lost at the end? Or that Mary was sad at the end? Depending on the meaning I'd change it to :
Mary watched sadly as her favourite team lost.
Mary watched sadly as the other team scored in the last minute, and her favourite team lost.