单选题 Had I known the result, I ______ you to tell me.
A. would not ask B. would not have asked
C. had not asked D. have not asked

【正确答案】 B

【答案解析】[考点] 虚拟语气
[解析] 这是虚拟语气在条件状语从句中的应用。从句是省略if的条件状语从句，用过去完成时“had known”表示对过去的假设，主句要选择“would have done”结构，故选B。