1. They will have written letters by tomorrow.
2. Ron will have cleaned the house by tomorrow.
3. Barry will have read a book by that time.
4. They will have built the cottage by that time
5. Sarah will have visited the Crimea by next summer.
6. The boy will have played chess by the evening.
7. Ollie will have won the games by next Monday.
8. Terry will have caught cold by the weekend.
9. The baby will have slept by the afternoon.
10. Professor will have read three lectures by June.
11. Kate will have reached the mountain by the evening.
12. My hamster will have eaten nuts by Tuesday.
13. Her father will have played chess by tommorrow.
14. We will have lost the match.
15. Kathy will have brought the book by tomorrow.