Тип а что со скобками делать, как, по какому правилу?
9. Has been staying
10.have you met
11. did he use to live in
12. did you do
13. had arrived, knew, had taken
14. will go, will you go
15. I am having
16. had doubled
17. have to be
18. had to, had to
19. saw
20. will be able
