Do you have a bank account in Canada? If yes, send them a statement, if no, open one in the city where you plan to live, transfer a substantial amount of money there (if you can), and send a statement. Have you been looking for work in Canada? Send copies of correspondence with potential employers. Friends and family in the US or, even better, Canada, know of your plans? Ask your friends and family to write letters saying they know of your plans. Contact an employment agency and tell them you are moving to Canada and looking for work. Send copies of that correspondence. It doesn't have to be airtight or definite (or even successful), you just need to prove intent. And if you haven't done any of that, I think it's also fine to say you haven't transferred money, or looked for work, or looked for housing, because CIC's website says it's going to take a total of about 14 months to process your application, and it hasn't made sense for you to do most of the foregoing until you are actually ready to move.
This was the question that made us most nervous filling out the application, because we really didn't have any proof that we're moving to Canada. So for the past 6 months we've been periodically making transfers to my Canadian account, and gradually looking for work, so we have not just the letters from friends and family who know about our plans and with whom we've talked about the move for quite some time, but also documentation from the period of time between applying and now showing our intent to move, so I feel confident now that if asked, this won't present a hurdle.
In your shoes, if you haven't done much of what we've done, I would do the bank account and get letters from friends and family, and start searching for employment. It's really an impossible question for many of us, but provide as much as you can!
Hope that the repair is minor.
