1) I am from Europe and I will travel to Toronto, Canada this summer for a period of 12 weeks for an internship. Will Toronto become like my residence during this period ?

2) For exemple, if during these 12 weeks, I travel to Montreal during a week end and then come back to Toronto, without knowing if I will stay in Toronto another 10 days without making another trip, should I pray full or qasr ?

Also, as cities in north America are very big, I am considered to be a traveler when I go beyond 22km from my housing, even though I am still in Toronto? If not, how how am I supposed to calculate that ?

1) If you are not staying for ten days straight you pray Qasr. You start counting from the end of the city.

2) Then you pray Qasr, you have 30 days to make up your mind.