Exercise 1: Find and correct the mistakes.
1. I think we got in the wrong bus.
→ on
2. My sister uses to eat mushrooms when she was a little girl but now she is allergic to them.
→ used
3. There did not used to be many traffic accidents before.
→ use
4. Did you use to riding a small bike in the yard outside your flat?
→ ride
Exercise 2: Rewrite the following sentences using “used to”.
1. I used to listen to Western music some years ago.
2. My mum used to be a chef in a Cham restaurant.
3. There used to be a market here in 203.
4. There didn't use to be more cars on the roads.
5. She used to be my idol when I was a child.
6. They didn't use to know how to drive a car.