to me John would not have failed.A. If he has listenedB. Had he listenedC. If he listene

问题补充：

to me, John would not have failed.

A. If he has listened

B. Had he listened

C. If he listened

D. Should he have listened

答案：

A. If he has listened

(答案→)B. Had he listened

C. If he listened

D. Should he have listened

解析：可联系答.案.网客服索取。