Question

—Was the driving pleasant when you vacationed in Mexico last summer?

—No, it 　　   for four days when we arrived, so the roads were very muddy.

   A. was raining　　　　　　 B. would be raining

   C. had been raining　　　　 D. have rained

 

Answer 1

答案：C
解析：

had been raining过去完成进行时表示某一动作从过去开始一直延续到过去某一动作或时间。A项过去进行时只表示过去某一时间正在发生的动作或过去某一动作发生时某个动作正在发生。