I apologize if I you, but I assure you that it was unintentional.
A. should offend
B. were to offend
C. had offended
D. offended
网友回答
A. should offend
B. were to offend
(答案→)C. had offended
D. offended
解析：考查交错时间的虚拟条件句：句意：如果我冒犯了你，我抱歉，但是我向你保证我不是故意的。本题中的was暗示，事情发生在过去，所以虚拟条件句中的谓语动词应该用表示过去时间的虚拟形式。用过去完成时，选C。