_______ of my classmates could work out the maths problem because it was too difficult.

    A. Each            B. No one        C. None          D. Any

_______ of my classmates could work out the maths problem because it was too difficult.

1. A.
   Each
2. B.
   No one
3. C.
   None
4. D.
   Any

_______ of my classmates could work out the maths problem because it was too difficult.

    A. Each            B. No one        C. None          D. Any

_______ of my classmates could work out the maths problem because it was too difficult.