Answer:
As I went over London Bridge I met my sister Jenny; I broke her neck and drank her blood and left her standing empty.
I may be made of metal, bone, or wood and have many teeth. My bite hurts no one and the ladies love me. What am I?
The more it dries, the wetter it becomes. What is it?
I am your most powerful weapon; I come before your eyes. I help you seek the truth, yet I often give you lies. What am I?
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.