【题目】No sooner _____ on the TV than I heard the news that Mr. Obama had been elected President of the USA one more.
A. I turned B. did I turn
C. I had turned D. had I turned
在线课程【答案】D
【解析】
试题分析: 句意:我刚一打开电视就听到奥巴马再一次当选美国总统这一消息。No sooner…than一……就，主句用过去完成时，than引导的从句用一般过去时。No sooner置于句首，主句用部分倒装。故选D项。