Hi!I have TRV till August 2013. I have already stayed in Canada for 4 months studying, then left the country for almost 1 month (came to my home University), and coming back on exchange in 1 week. I will stay again for 4 months. Do I still need study permit? I didn't apply for it before my first entry, because I didn't plan staying for more than one semester. Cumulatively I will study for 8 month, but if the fact that I left the country counts, each entry is no longer that 6 months.