1. Please give me a pencil, I (have lost) mine. 2. I (have not met) Peter
since Monday. 3. Nina has just ( finished) work. 4. Where is Sergei? —
He (has gone) home. He ( left) the room a minute ago. 5. What are you (
reading) now? — I (am reading) "Jane Eyre" by Charlotte Bronte. 6. They (
read) "Ivanhoe" by Walter Scott a month ago. What about you? Have you (
read) "Ivanhoe"? 7. My watch (has stopped). There (is) something wrong
with it. 8. Have you ( seen) Jack today? — Yes, I (saw) him at the
institute. 9. Have you ( heard) the new symphony by M.? — Yes, I have. — When
did you ( hear) it? — I ( heard) it last Sunday. 10. You (have changed) so
much. Has anything ( happened)? 11. What are you ( doing) here at such a late
hour? Are you ( writing) your composition? — No, I (have written) it already. I
(am working) at my report. — And when did you ( write) your composition? — I
( finished) it two days ago. 12. I say, Tom, let's have dinner. — No,
thank you, I have already ( had) dinner. 13. What is the weather
like? Is it still ( raining)? — No, it (has stopped) raining.