Поставьте следующие предложения в вопросительную и отрицательную формы.
1. Marmalade is made of oranges.
2. This town was built a century ago.
3. They were invited to a birthday party.
4. The fax has just been sent.
5. America was discovered long ago.
6. The book is still being published.
7. My neighbor's car was stolen last night.
8. His winter boots were made in Germany.
9. The building was ruined by the earthquake.
10. Italian is spoken in Italy and on Malta.