My Thorn and My Rose

Katniss volunteers for Prim. But what happens when Gale tries to volunteer for Peeta, but Peeta doesn't let him? What happens if 3 tributes from district 12 are put in the arena? What will happen?
How will they survive?
Will they survive?
Can they escape the grips of the Capitol?

I kinda suck at these I'm sorry :L Please give it a shot though?