19. The last time I heard from her was years ago.

20. The last time the children was taken to the park was in 2012.

21. This is not our first time visiting this city.

22. I have seen this movie twice.

23. He has been to a tennis match twice.

24. She has been doing housework since she got home.

25. He has been a teacher for 20 years.

27. We haven't contacted for 3 months.

28. I haven't written to her for a long time.

29. How long have you been waiting for he bus?

30. I have stayed in this hotel twice.

31. The last time he sent me postcards was when he was in Paris.

He hasn't sent me any postcards since when he was in Paris.

32. They last visited their hometown when they were 12.

33. She hasn't ever read such a romantic novel.

34. It's been two hours since we began to talk.

35. My father has been working as an engineer since he was 22.