1. Mr Grant has been a teacher for ten years.
2. Jack has played the piano since 2015.
3. Nobody has seen him since last week.
4. My grandparents has lived in the country since November.
5. I haven't eaten anything for two hours.
6. They haven't speaken to me since yesterday.
7. My sister has visited twenty countries since 2014.
8. It hasn't snowed here for two months.
9. Many things have changed here since my last visit.
10. Why haven't you done anything about it for such a long time?
