【题目】When we got to the railway station，the express hadn't started yet，so we _______．
A. needn't hurry B. didn't need hurry
C. needn't to hurry D. needn't have hurried
在线课程【答案】D
【解析】
考查情态动词+have done结构。句意：当我们到达火车站时，列车还没有启动，所以我们本不必匆忙。固定结构：needn't have done表示“本不必做而做了”。结合句意可住答案为D。