1. I have known for a long ago.

2. I learned about this long ago.

3. We long ago want ask you about it.

4. We long ao goanswer on this question.

5. How longago you this car?

6. Ho long ago you bought this car?

7. I haven't received my friend's letter in a long time.

8. I received this letter long ago.

9. We haven't read such interesting stories for a long ago.

10. We read this story a long ago.

11. The last time we saw her was three weeks ago.

12. We haven't seen her lately.

13. My husband has been very busy lately.

14. The last time we were abroad was three years ago.

15. Students passed two difficult exams this week.

16. We passed this exam last week.

17. My friend hasn't called me today.

18. He called me today at three o'clock.

19. Our company has built three ne houses this year.

20. We built a new school in August.