Только что в скобках текст не нужен

В некоторых пунктах я добавил второй вариант ответа, т. к. не уверен в их правильности из-за недостка информации в предложениях. (отметил их скобочками)

1. were; would leave

2. lived; would visit

3. get; will go

4. lived; would gather

5. returned; would watch

6. knew (have known); would try (would have tried)?

7. came; would be

8. buys (bought); will have (would have)?

9. receive (received); won't worry (wouldn't worry)?

10. don't work; will fail

11. snows; will go

12. phones; talk

13. would have driven; had asked

14. would have helped (would help); hadn't been (wasn't)

15. wouldn't be; arrived

16. didn't change; would take

17. will write; get

18. didn't buy; wouldn't make

19. listened; would understand

20. would have found (would find); had looked (looked)?