31.  It certainly seemed like the natural thing to do.

32.  It seemed like a natural thing to do to me.

33.  It started as a fantasy and eventually turned into the most natural thing to do.

34.  It was just the natural thing to do.

35.  It just seemed like the next natural thing that we would get married.

36.  Modern midwifery is rooted in the belief that pregnancy, labor and delivery are natural things.

37.  Money is a natural thing to argue about.

38.  Our host made it seem like the most natural thing in the world.

39.  Peace through education may sound quaint in the rough-and-tumble world of Middle Eastern politics, but to the participants it is the most natural thing in the world.

40.  So he does the natural thing and defies orders.