Odpowiedź :
1. used to navigate
2. used to listen
3. didn’t use to have
4. didn’t use to exist
5. used to wear
6. Did people use to write
7. What did teenagers use to do
2. used to listen
3. didn’t use to have
4. didn’t use to exist
5. used to wear
6. Did people use to write
7. What did teenagers use to do