【题目】 I ________down to London when I suddenly found that I was on the wrong road.
A.was driving
B.have driven
C.would drive
D.drove

【答案】A
【解析】句意：我正开车去伦敦这是我突然发现我走错路了。drive是延续性动词，表示正在进行。根据后半句可知是句型“某事正在发生这是……”故选A。