As he carried her over the threshold, the house began to collapse and she fled, leaving him forever; his business subsequently failed and he became a broken man. <SEP> If he didn't carry her over the threshold, she might have not left him forever.
As they carried her over the threshold, the house began to collapse and she fled, leaving them forever; their business subsequently failed and they became a broken person. <SEP> If they didn't carry her over the threshold, she might have not left them forever.