Whoa! I am an english native speaker, and I just listened to this phrase, and it sounds really odd, like some weird english dialect. I hop you guys don't rely too much on the pronounication of the TTS machine, because if you said this to someone, with the way she cuts off words like "to", people would understand, but might look at you weird.
I am a romanian. I find the English courses from Duolingo fairly easy at the moment. I want to take the Cambridge Advanced Exam next year, in June and Duolingo is mostly helping me develop my speaking skills (isn't that ironic). By the way, "yours" has no apostrophe :D Apart from that, your english is also very good. Edit: Now I realise you said you were a native speaker, of course your english is very good