ADVICE: Re-new your passport expiry date so that you will take the visa for the whole period of your studies and send with the passport a letter requesting the "letter of introduction" which you can not enter Canada without even if you got the visa. Also attach a small paper to your passport pointing that you renewed your passport and on which page. Why is that? Because the Canadian Embassy in Abu Dhabi did a terrible mistake with me. They did not even bother to look at the renewal page resulting in giving me the visa for only two years while my studies are for four years.
Good luck
Good luck