along the quiet road at forty miles an hour, and then an old man suddenly started to cross the road in front of me.
A. Driving
B. When I was driving
C. I was driving
D. Having driven
网友回答
A. Driving
B. When I was driving
(答案→)C. I was driving
D. Having driven
解析：考查并列句，因为句子中有and这个连词，而非谓语动词如A、D不能与并列连词连用，复合句如B也不能与并列连词连用。句意：我正以一小时40公里的速度沿安静的公路开车，然后一个老人突然在我前面过马路。选B。