(·四川省南充市二模) him not to do so he wouldn't have made such a serious mistake.A. If I pe

问题补充：

(·四川省南充市二模) him not to do so, he wouldn have made such a serious mistake.

A. If I persuaded

B. Did I persuade

C. Had I persuaded

D. If I should persuade

答案：

A. If I persuaded

B. Did I persuade

(答案→)C. Had I persuaded

D. If I should persuade

解析：选C考查倒装、省略和虚拟语气。根据“wouldn have made”可知，此处表示与过去事实相反的假设，因此从句用if引导且用过去完成时；省略if并将had提前就构成了省略if的虚拟条件句，且构成了倒装结构。