完形填空

　　Last night I was driving from Harrisburg to Lewisburg, a distance of about 80 miles．It was late, I was late, and I was driving 1________．

　　At one point along an open highway, I came to a crossroads with a traffic light．I was 2________ on the road by now, but as I came near the light, it turned 3________, and I braked to a stop．I looked left, right, and behind me．Nothing．Not a car, no suggestion of headlights, 4________ there I sat, waiting for the light to 5________, the only human being, for at least a mile in any 6________．

　　I started wondering why I 7________ to run the light．I was not afraid of being caught, because there was 8________ no policeman anywhere around and there certainly would have been no 9________ in going through it．

　　Much later that 10________, after I'd met with a group in Lewisburg and had climbed into bed near midnight, the question of why I'd stopped for that light 11________ me．I think I stopped 12________ it's part of a contract(契約) we all have with each other．It' s not only the law, but it's an agreement we have, and we trust each other to follow 13________：we don't go through red lights．

　　We do 14________ we say we'll do．We show up when we say we'll show up．

　　I was so 15________ of myself for stopping for that red light．And as no one would ever have known what a good person I was on the road from Harrisburg to Lewisburg, I had to tell s someone．

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