What was the subject before he asked the questions? Was he looking for a diversion, a subject he is more comfortable with?
JWs do not want to talk about anything problematic, so if you let him sleaze his way out of every tricky topic, you'll never get him to confront anything worthwhile.
And you don't have to answer all his questions. He is the one claiming to belong to a church that can save your sorry arse from his killer god, so make him answer your question (note: singular).