---How was the weather then?
---Hardly off the plane when it started to rain.
A. I had stepped
B. had I stepped
C. I stepped
D. did I step
网友回答
A. I had stepped
(答案→)B. had I stepped
C. I stepped
D. did I step
解析：考查倒装句：Hardly…when…“一…就…”,hardly位于句首时，用部分倒装，时态是过去完成时，句意：--天气怎样？--我一从飞机上下来就开始下雨了。选B。