2. Mr.Van didn't use to ride his motorbike dangerously.

3. Did the streets use to be cleaner and more peaceful ?

4. I used to go out on Sundays.

5. They didn't use to go on holiday together.

EX3 :

1. did you use to go

2. used to be

3. used to like

4. used to go

5. used to live

6. used to go

7.used to sit

8. did you use to play

9. used to be

10. used to talk

11. used to play

12. used to have

13. Did they use to work

14. used to be

15. used to like

2. Mr Van didn't use to ride his motorbike dangerously. 

3. Were streets use to be cleaner and more peaceful? 

4. I used to go out on Sunday. 

5. They didn't use to go on holiday together. 

***

1. did you use to 

2. used to be 

3. didn't use to 

4. used to go 

5. used to live 

6, used to go 

7. didn't use to sit 

8. did you use to play 

9. used to be 

10. used to talk 

11. used to play 

12. didn't use to have 

13, Did they use to work 

14. used to be 

15. didn't use to like 

Bn học tốt!!