Bài 1:
1. Run
2. Be
3. Go
4. Love
5. Live
1. Be
2. Smoke
3. Drink
4. Play
5. Plant
Bài 2:
1. People used to write letters to their friends and relatives.
2. People didn't use to have mobile phones.
3. Did Peter use to have a cat?
4. Jane and Nick used to like pop music.
5. Linh didn't use to wear a hat.
6. Did your dog use to bank at cats?
7. Tony used to be rich.
8. We didn't use to be friendly to strangers.
9. Did that king used to be cruel?
10. They used to be writers.
