Use to,didn't use to primary school 9 sentences ​

I didn't use to go to primary school by bus.I didn't use to get bad marks in primary school.I didn't use to have astronomy lessons in primary school.I didn't use to have many exams in primary school.I used to go to primary school by car.I used to get excellent marks in primary school.I used to eat in the school canteen when I was in primary school.I used to like math's lessons in primary school.I used to have more free time when I was in primary school.