Answer:
The more you take the more you leave behind. What are they?
I have a frame but no picture. I have poles but not standing up
I begin your sentences. What am I?
I cover what's real; hide what is true, but sometimes bring out the courage in you. What am I?
What runs but never walks has a mouth but never talks has a head but never weeps has a bed but never sleeps?
No matter how little or how much you use me, you change me every month.