Ответ:

1. What are you doing here at such a late hour? Are you writing your composition? (Present Continuous)
No, I have written it already. (Present Perfect). I am working at my report. (Present Continuous)
And when did you write your composition? I finished it two days ago. (Past Simple)
2. ............ No, thank you, I have already had dinner. (Present Perfect)
3. What the weather is like? (Present Simple) Is it still raining? (Present Continuous)
4. Please, give me a pencil, I have lost mine. (Present Perfect)

5. I haven't met Peter since Monday. (Present Perfect)
6. Nina has just finished work. (Present Perfect)

7. Where is Sergey? (Present Simple) He has gone home. (Present Perfect)
He left the room a minute ago. (Past Simple)
8. What are you reading now? I am reading "Jane Eyre" ......(present continuous)
9. They read "Ivanhoe" by ........ (Past Simple)

Have you read "Ivanhoe"? (Present Perfect)

10. My watch has stopped. (Present Perfect) There is something wrong with it. (Present Simple)
11. Have you seen Jack today? (Present Perfect)
Yes, I saw him at the institute. (Past simple)

12. Have you heard the new symphone by M.? Yes, I have. (present perfect)
When did you hear it? I heard it last Sunday. (Past Simple)
13. You have changed so much. Has anything happened? (Present Perfect)

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