Answer:
If you break me, I'll not stop working. If you can touch me, my work is done. What am I?
What force and strength cannot get through, I with my unique teeth can do. What am I?
I have a hundred legs but cannot stand. I have a long neck but no head. I cannot see and I help keep your house neat and tidy.
I run up and down the stairs without moving. What am I?
Although I am still, in families I run. I continue to live on in a living one. As one continues to draw breath, I will not rust. However, when one stops drawing breath, I will become mere dust. What am I?
When is it bad luck to see a black cat?