поставьте предложения в отрицательную и вопросительную формы.
1. He’s discussed the problem with his friends. 2. She’s gone on a voyage with her husband. 3. We’ve seen a comedy on TV. 4. The representatives have been to the plant on Monday. 5. They’ve taken part in the experiments. 6. You’ve looked through the offer for compressors. 7. They’ve made up the contract for rendering technical assistance. 8. She has collected the mail. 9. She has seen today’s papers and letters. 10. The managers have studied the offer.

1.Has he discussed the problem with his friends? No,he has not discussed the problem with his friends.
2.Has she gone on a voyage with her husband? No,she has not gone on a voyage with her husband.
3.Have ve seen a comedy on TV? No,we have not seen a comedy on TV.
4. The Representatives have not been to the plant on Monday.Have the representatives been to the plant on Monday?
5.They have not taken part in the experiments.Have they taken part in the experements?
6.Have you looked through the offer for compressors? You have not looked through the offer for compressors.
7.they have not made up the contract for reading technical assistance. Have they made up the contract for reading technical assistance?
8.Has she collected the mail? She has not collected the mail.
9.Has she seen today's papers and letters? She has not seen today's papers and letters.
10. The Managers have not studied the offer. Have the managers studied the offer?