Помогите пожалуйста задать общий вопрос к этим предложениям.1. They live in

Помогите пожалуйста задать общий вопрос к этим предложениям.
1. They live in a small town on the Canadian border.
2. The USA borders on Canada in the north.
3. The Urals are a chain of mountains which is situated in Europe and Asia.
4.We spent a nice day on the coast.
5. The Colorado River flows south.
6. The new mobile was a perfect gift for the boy.
7. The Great Plains are situated in the central part of the country.
8. Russia stretches from the Pacific Ocean to the Baltic Sea.
9. Lilies-of-the-valley are early spring flowers.