Англисский Номер 19 юнит третий класс седьмой . Поставьте глагол в нужную форму perfect tense

1. they will not have had supper 2. The birds will have flied away 3. we will have finished school 4. Jack will have taken his exam 5. it will have stoped raining 6. my parents will have bought  a computer 7. George will not have memorized all the idioms 8. The Rogers will have finished building 9. The party will not have started before we get 10. He will not have come back