Раскройте скобки, употребляя глаголы в Present Perfect, Present Continuous, Present Simple

Раскройте скобки, употребляя глаголы в Present Perfect, Present Continuous, Present Simple либо Past Simple.
1. Please give me a pencil, I (to lose) mine. 2. I (not to meet) Peter since Monday. 3. Nina just (to finish) work. 4. Where Sergei (to be)? He (to go) home. He (to leave) the room a minute ago. 5. What you (to read) now? I (to read) "Jane Eyre" by Charlotte Bronte. 6. They (to read) "Ivanhoe" by Walter Scott a month ago. What about you? You (to read) "Ivanhoe"? 7. My watch (to stop). There (to be) something wrong with it. 8. You (to see) Jack today? Yes, I (to see) him at the institute. 9. You (to hear) the new symphony by M.? Yes, I... . When you (to hear) it? I (to hear) it last Sunday. 10. You (to change) so much. Anything (to happen)? 11. What you (to do) here at such a late hour? You (to write) your composition? No, I (to write) it already. I (to work) at my report. And when you (to write) your composition? I (to finish) it two days ago. 12. I say, Tom, let's have dinner. No, thank you, I al-I ready (to have) dinner. 13. What the weather (to be) like? It still (to rain)? No, it (to stop) raining.