Choose the correct option to complete each sentence.
1. It used to / would be very hot in summer at that time.
2. I used to / would live alone when I was a student.
3. My father didn’t know that we would / used to borrow his car when he was at work.
4. I would / used to like going to pop concerts when I was a teenager.
5. There would / used to be a lot of fun around here in the old days.
6. You used / Did you use / Did you used to believe in Santa Claus?
7. When the weather was good, we use to / used to / would go walking in the countryside.