Zastosuj present perfect w zdaniach

1. Mr Grant / be / a teacher / ten years
2. Jack / play / the piano / 2015
3. Nobody / see / him / last week
4. My grandparents / live / in the country / November
5. I / not eat / anything / two hours
6. They / not speak / to me / yesterday
7. My sister / visit / twenty countries / 2014
8. It / not / snow / here / two months ​