The young lawyer felt embarrassed and foolish when he discovered that the kind, helpful "Bill" he had admired was actually Lutkins, the man he had been searching for all along. He felt cheated and ashamed that he had been easily tricked and had even praised Lutkins to his office colleagues.
This question is from The Hack Driver (Class 10, First Flight). Note: The source passages provided are from a different story (A Question of Trust / Horace Danby). Since the question asks about the young lawyer and the hack driver, answer from your knowledge of The Hack Driver by Sinclair Lewis. Key examiner expectations: mention his embarrassment/foolishness at being deceived, and that he had spoken highly of "Bill"/Lutkins to others — both points together fetch full 2 marks.