At no time the rules of the game.It was unfair to punish them.A. they actually brokeB. do

问题补充：

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：

A. they actually broke

B. do they actually break

C. did they actually break

D. they had actually broken

解析：句意：他们确实绝不会违反比赛规则。惩罚他们是不公平的。At no time绝不，放在句首时，句子应选用部分倒装结构，也就是助动词提到句首。根据该句语境是过去时，故该处应填过去时，选C。

【考点定位】考查倒装和时态。