No sooner on the TV than I heard the news that the stampede in Cambodia’s capital, Phnom Penh, had left 375 victims dead．
A. had I turned
B. did I turn
C. I had turned
D. I turned
网友回答
(答案→)A. had I turned
B. did I turn
C. I had turned
D. I turned
解析：考查倒装句，否定词No sooner 放在句首，使用部分倒装，根据句型：No sooner…than 一……就，No sooner 后用过去完成时态，所以助动词had前提，选A。