Поставьте следующие предложения в вопросительную и отрицательную форму.
1.this dress is made of silk.
2.This film will be shown next month.
3.They are taught English.
4.This conference will be held tomorrow.
5.This book has already been sold.
6. The house was built last year.
7. She was met by her brother.
8. The meeting was held yesterday.