After he became conscious he remembered and on the head with a rod.A. to attack; hitB. t

问题补充：

After he became conscious, he remembered and on the head with a rod.

A. to attack; hit

B. to be attacked; to be hit

C. attacking; hitting

D. having been attacked; hit

答案：

A. to attack; hit

B. to be attacked; to be hit

C. attacking; hitting

(答案→)D. having been attacked; hit

解析：remember to do sth.表示“记得要做某事”而 remember doing sth.表示“记得曾做过某事”，故排除A和B。又因为主语“he”和动作“attack”之间是被动关系，故用被动语态，选D。