1. I've just called him. (Present Perfect)
2. I didn't call him yesterday, I was busy. (Past Simple)
3. My parents have just gone away. (Present Perfect)
4. She's already answered the letter. (Present Perfect)
5. She answered it on Tuesday. (Past Simple)
6. My friends went away five minutes ago. (Past Simple)
7. I read that book in the summer holidays. (Past Simple)
8. The fisherman have sold now all his fish. (Present Perfect)
9. He sold the last one half an hour ago. (Past Simple)
10. I haven't seen him for three years. (Present Perfect)
11. I met him last week. (Past Simple)
12. Has the newspaper come? - Yes, Ann is reading it now. (Present Perfect)
13. Did you wear your hair long when you were a school? - Yes, my mother insisted of it. (Past Simple)
14. He hasn't smoked for two weeks. He's trying to give it up. (Present Perfect)
15. When did he arrive? He arrived at 2.00. (Past Simple)
16. Have you shut the window? (Present Perfect)
17. I read his books when I was ar school. I enjoyed them very much. (Past Simple)
18. Have you been here before? - Yes, I spent my holidays here last year. - Did you have a good time? - Yes, the sun never stopped shining. (Present Perfect; Past Simple)
19. The clock is slow. - It isn't slow, it's stopped. (Present Perfect)
20. Here's you dress; I've just mended it. (Present Perfect)
21. I left home at 8.00 and got here at twelve. (Past Simple)
22. Have you had breakfast yet? - Yes, I had it at 8.00. (Present Perfect; Past Simple)
23. Did you see the stars last night? (Past Simple)
24. We've missed the bus. Now we'll have to walk. (Present Perfect)
25. The lecture has just begun. You're a little late. (Present Perfect)
26. He broke his leg in a skiing accident last year. (Past Simple)
27. I can't go out because I haven't finished my work. (Present Perfect)