9. задайте все типы вопросов к предложению: the representatives of different parties are discussing the development of national economy.

Are the representatives of different parties discussing the development of national economy?
Who is discussing the development of national economy?
What representatives are discussing the development of national economy?
What are the representitives of different parties doing?
What are the representatives of different parties discussing?
What development are the representatives of different parties discussing?
Are the representatives of different parties discussing the development of national or international economy?
The representatives of different parties are discussing the development of national economy, aren`t they?