Нужно вставить for, since или ago! 8. our family haven't heard from five months 9. oh, john! as usual you are late. i've waited for 11 a m 10. he has worked for this april. 11. i haven't spoken to mary . 12. two years bought a car. 13. mr. pembroke doesn't often mow the lawn he hasn't cut the grass . l 4. i have never sailed that journey 15. we have been waiting here an hour