---Will people use money ____ 100 years?

   ---No, they won’t. Everything will ____free.

   A. in, \            B. for, is               C. in , be          D. since, be

---Will people use money ____ 100 years?

---No, they won’t. Everything will ____free.

1. A.
   in, \
2. B.
   for, is
3. C.
   in , be
4. D.
   since, be

---Will people use money ____ 100 years?
---No, they won’t. Everything will ____free.