Сделайте пожалуйста: Паст симпл, паст пёрфект, паст континиус
11. have never seen. 12 has never been. 13. travelled. 14. did you play? 15. has just come. 16. swam. 17. haven't visited. 18. did she go? 19. have already come back. 20. haven't read.
