Exercise 6: Changed into negative and interrogative form.
1 They used to play tennis twice a week.
=> They didn't use to play tennis twice a week.
=> Did they use to play tennis twice a week ?
2. I used to go to the gym three times a week
=> I didn't use to go to the gym three times a week.
=> Did you use to go to the gym three times a week?
3. Tennis used to be a sport for rich people only.
=> Tennis didn't use to be a sport for rich people only.
=> Did tenns use to be a sport for rich people only?
4. My father used to take me to see soccer games on Saturday.
=> My father didn't use to take me to see soccer games on Saturday.
=> Did your father use to take me to see soccer games on Saturday?
5. He used to buy a new tennis racket.
=> He didn't use to buy a new tennis racket.
=> Did he use to buy a new tennis racket?
Exercise 7: Rewrite the sentences with "used to".
1. They used to got o Da Lat in the summer.
2. We used to play soccer in the past.
3. I used to get up earlier when I had work.
4.Tom used to do his homework in the evening.
5. Lan used to write to Maryam twice a month.
6. He used to work at night when he worked in the supermarket.
7. Did they use to watch TV in the past?
8. She used to play badminton in her free time.
9. They used to go went swimming in the afternoon in 1990.
10. He used to be a doctor in that hospital.