答案：D

题目分析：考查引导时间状语从句倒装的区别。No sooner……than……; hardly…when… scarcely…..when…引导时间状语从句放在句中时主句谓语动词要用过去完成时，例如:I had no sooner reached home than it began to rain. 我一到家天就下起雨来。但是no sooner, hardly位于句首时，一定要把过去完成时与主句主语进行部分倒装，故D正确。