问题
选择题
_________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
答案
答案：C
题目分析： 句意：我正以每小时40英里的速度开车，这时一个老人突然出现在我面前过马路。因为两句话中间有and，所以是并列句，AD项是现在分词做状语，B是时间状语从句，都不是并列句，选C。