Read the passage given below and answer the questions that follow : He must have seen us coming from some distance. By the time he loomed up in front of my headlights, the arms in the snow-caked overcoat were flailing desperately like windmills. Pat gave a little gasp and I braked at once, though gently, or I might have followed his car into the ditch. But immediately I had second thoughts; there had been one or two nasty cases of hold-up in the papers recently. I wasn't going to take any chance with Pat, my sister, there. I changed down the gear and made to drive round him. Pat was horrified. 'Aren't you stopping, Bill?' I shook my head. 'Too risky'. It was then that I saw the car. It had skidded right across the road and was hanging nose down in the deep ditch. I braked again and brought the Mini-Morris gradually to a stop. I slid back my window as he looked in and then I saw that he was bleeding from a cut in his cheek. 'Anybody else in the car?' 'No, on my own. If you could give me a lift'. I nodded and he got into the back and slammed the door. 'Sorry about this, folks. I was beginning to think I was stuck there for the night. Not that you would call it a busy road, is it?' 'Not at twelve o'clock at night,' Pat said, turning round to smile at him. 'We have been to a dance in Boling ford. Bill didn't want to go, but I was keen. He isn't a bad brother, really'. Pat gave a little gasp and I braked at once. The underlined is a/an