Answer:
I have a foot but no leg. What am I?
I am a certain five-letter word and become shorter when you add two letters to me. What am I?
I am a mother from a family of eight. I spin around all day despite my weight. Had a ninth sibling before founding out it was fake. What am I?
I am a five letter word. If you remove my first letter I am a form of energy. Remove my first two and I am needed to live. Scramble the last three and you can drink me. What am I?
I must be broken before you can use me.
No matter how little or how much you use me, you change me every month.