Wonder (to my opposite neighbour) what county we're passing through. He wonders, too. We both look out of our own side windows, and go on wondering.
Wonder if that protracted shrill steam-whistle means danger. Opposite neighbour wonders if it does.
Wonder why we're stopping; 'tisn't a station.
Wonder what's the matter.
Wonder what it is.
Wonder what it can be.
Wonder if it's dangerous to put one's head out of window.
Wonder if the engine has broken down.
Wonder if there's anything on the line.
Wonder if the express is behind us.