19. 1. By half past eight they won't have had supper yet. 2. The birds will have flown away before winter comes.
3. In five years' time we shall have finished school.
4. By this time next week Jack WNI have taken his exam.
5. I hope it will have stopped raining before we have to go.
6. I don't think my parents will have bought a computer by the end of
the week.
7. George won't have memorized all the idioms by Friday.
8. The Rogers will have finished building their new cottage before sum-
mer.
9. The party won't have started before we get there.
10. He won't have come back by supper time.
and 2nd have​

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