1.Peter didn't use to smoke at all when he was at the university but now he smokes ten cigarettes a day. 

2.Mr.Carlos used to travel a lot when he was young but now he writes books for travelers. 

3.He used to smoke. 

4. Did you use to go to the beach when you lived in Nha Trang? 

5.Mr. Nam used to go to work by motorbike, but now he goes to work by bus. 

6.Linda used to live with her parents. 

7.They didn't use to go to the cinema every Sunday last year. 

8. Name used to come to class late. 

Mình ko chắc đúng lắm, nhưng chúc bạn làm bài tốt ạ(*・ω・*)b♪💖☕

=>