Answer:
I need to be taken from you before you can have me.
Two bodies have I, though both joined in one. The more I stand still the faster I run. What am I?
I am a food with 5 letters. If you remove the first letter I am a form of energy. Remove two and I'm needed to live. Scramble the last 3 and you can drink me down.
What dress does everyone have, but no one wears?
I am a time for gathering crops. Remove the first three letters and I become an object you can wear.
No matter how little or how much you use me, you change me every month.