He’s already ridden the horse before ?A. is heB. isn’t heC. has heD. hasn’t he

问题补充：

He’s already ridden the horse before ,?

A. is he

B. isn’t he

C. has he

D. hasn’t he

答案：

A. is he

B. isn’t he

C. has he

(答案→)D. hasn’t he

解析：本题是现在完成时态的反义疑问句，前句是肯定的意思，后半句用否定的结构，本题的助动词为has，故否定结构为hasn’t，故本题选D。