Ответ:
1. My dad has been working at school since 1995.
2. My grandma has been cooking dinner since two o'clock.
3. My sister has been sleeping since 5 o'clock.
4. My mum has been cleaning the flat since the morning.
5. My grandpa has been watching TV since 6 o'clock.
6. Jack has been writing poems since his childhood.
7. She has been learning Spanish for 2 years.
8. They have been living in the village for 4 months.
9. Anna has been talking on a phone for 20 minutes.
10. They have been fishing for 5 hours.
11. They have been playing volleyball since 3 o'clock.
12. She has been reading since the morning.
13. She has been sleeping for 2 hours.
14. We have been learning the language since 1998.