【题目】At no time ________ the rules of the game.It was unfair to punish them.
A.they actually broke
B.do they actually break
C.did they actually break
D.they had actually broken

【答案】C
【解析】考查倒装句型。否定词或否定短语放于句首，句子要不完全倒装，此处at no time(在任何时候都不，决不)引起句子不完全倒装，即将助动词放于主语之前。根据题干时态标志词was可知选C。