At no time the rules of the game.It was unfair to punish them. (2013·辽宁，26)
A. they actually broke
B. do they actually break
C. did they actually break
D. they had actually broken
网友回答
A. they actually broke
B. do they actually break
(答案→)C. did they actually break
D. they had actually broken
解析：C
解析 考查倒装句型。at no time为介词短语，当其位于句首时，句子应该用部分倒装；根据第二个句子可知时态为过去时，故选C。