Сделайте эти предложения отрицательными и вопросительными
1. He has posted the letter.
2. I have asked him to dinner several times.
3. I shall have finished this job in by 2 o’clock.
4. We have been to Berlin this year.
5. By the time we get to the party everything will have been eaten.
6. The phone has stopped ringing.
7. We had passed our English exam by the 3rd of January.
8. He has lived here for ten years.
9. I have made a mistake.
10. By the end of his university course he will have attended 1,300 lectures.