1. Did he refuse to take this offer?
Did he refuse to take or accept this offer?
What offer did he refuse to take?
He refused to take this offer, didn't he?
Who refused to take this offer?
2. Were they having supper at 9?
Were they having supper at 9 or at 10?
What were they doing at 9?
They were having supper at 9, weren't they?
Who was having supper at 9?
