Answer:
I am a mountain at night meadow at day
Everyone asks for me but yet everyone hates to face me. For someone I am agony, for others I am relief! What am I?
I am a rock group with four members. All dead one was assassinated.
The sun bakes me, the hand breaks me, the foot treads on me, and the mouth tastes me. What am I?
I am easy to see, but no one likes looking at me. Without me, there would be no you. What am I?
No matter how little or how much you use me, you change me every month.