下列各句中，表达得体的一句是（ ）

He isn’t a man who knows _____ to deal withpeople properly, but he does know _____ to do with all kinds of papers in frontof him.

I really don’t know______ I had my money stolen .

In the good care of the nurses,the boy is___recovering from his heart operation [ ]

Tom swims __________ than I, but he doesn’t swim_________ my brother.