I'm a bit confused on what a 'narrow' question is? Narrow in the sense that there isn't really much to say on it?
If something happens, like - "Est-ce que tu aimes le sport?" go on a COMPLETE tangent, like Hip already said, completely unrelated, like "Non, je ne l'aime pas/je détèste le sport/je m'en fous du sport (good for impressing them with argot)", and then start a tangent "... mais j'aime bien sortir avec mes amis. On va toujours au resto, où on mange beaucoup. C'est vrai que j'aime bien manger, et voila` pourquoi je détèste le sport, je suis trop gros parce que je mange trop!" - and there we go. That stops you from talking about sport, just replace 'going out to restaurants with friends' with like, "J'aime écrire/J'aime la musique/les sciences/les chiens/les poubelles/voyager" - anything as long as it takes you waaaay away from sport
. I mean, it has to be a really crap examiner that responds to the 'No i hate sport, but I like XXXXX" by going, after you finish, "Tu joues dans une équipe de football?"... That's grounds enough to be arrested, tried by the Na-Duhhhh Act of 1974, then hung, drawn, quartered. It's a conversation!, shouldn't it function like a one? And yet it's really horrible that people are unfortunate enough to get people that don't respond thusly...
But yeh. If you get someon ethat does that, just keep going back to your preferred topic "Non, je vous ai déja` dit que je préfère manger. Je n'ai pas de temps pour jouer au sport parce que j'ai toujours un biftek a` la bouche. En fait, hier soir on est allés manger dans un ptit resto en ville, c'était bien gentil....". and so on...
Seriously, you will love making the strangest and weirdest, most far-out connections between two things, and become so good at it.
Failing that, fais tes prières!