Jumping out of _______ train running at a speed of 200 kilometers per hour is quite _____ dangerous practice.

  A. /; the        B. /; a              C. a; a            D. the; the

Jumping out of _______ train running at a speed of 200 kilometers per hour is quite _____ dangerous practice.

1. A.
   /; the
2. B.
   /; a
3. C.
   a; a
4. D.
   the; the

Jumping out of _______ train running at a speed of 200 kilometers per hour is quite _____ dangerous practice.

  A. /; the        B. /; a              C. a; a            D. the; the