Answer:
What can be drawn but never taken?
At night I come without being fetched, and by day I am lost without being stolen. What am I?
I am a seven letter word. I am very heavy. Take away two letters from me and you will get eight. Take away one letter from me and you will get 80. What word am I?
A trail, a union, together tied. Come across me and you will find you cannot change the course I'm on. Without me you cannot travel on. What am I?
Forward I am heavy backward I am not. What am I?
No matter how little or how much you use me, you change me every month.