Have the Smiths been driving to the country for two hours?
The Smiths have been driving to the country for two hours,haven`t they?
How long have the Smiths been driving to the country ?
Have the Smiths been driving to the country for two or three hours ?
Who has been driving to the country for two hours?
Are they going to throw a great party next week?
They are going to throw a great party next week,aren`t they?
Who is going to throw a great party next week?
When are they going to throw a great party?
Are they going to throw a great party next week or tomorrow?