Поставьте следующие предложения в вопросительную и отрицательную форму. 1) there are many big cities in the usa. 2) we like your equipment and want to sign a contract with you. 3) he has a lot of duties in the office. 4) my secretary speaks english fluently. 5) my brother is the head of a big office.

1. Are there many big cities in the USA?
There aren't many big cities in the USA.
2. Do you like my equipment and want to sign a contract with me?
We don't like your equipment and don't want to sign a contract with you.
3. Does he have a lot of duties in the office?
He doesn't have a lot of duties in the office.
4. Does your secretary speak English fluently?
My secretary doesn't speak English fluently.
5. Is your brother the head of a big office?
My brother is not the head of a big office.