1. He will come back in summer. By then he will have stayed in Cork for two years.
2. At midnight the speakers will have been presenting their projects for ten hours.
3. When we go to see our kids, they will have been at the camp for a fortnight.
4. In a fifty years’ time thousands of species will have disappeared from this planet.
5. In a few hours’ time we will be sitting on the plane.
6. I’ll meet you at four o’clock. – At four? I’m afraid I will be teaching English.
7. We will have replaced the wheels before you come back from the shop.
8. I’m sorry, we can’t come tonight. We will be watching the new documentary on

8. will have been staying

9. will have been presenting

10. will have been

11. will have disappeared

12. will be sitting

13. will be teaching

14. will have replaced

15. will be watching