Употребите артикли a, an, the , где требуется
1. ___ United States is between ____ Mexico and _____ Canada.
2. Yesterday I had ___ party. ____ party was very funny.
3. ___ Alps are ____ highest mountain in ___ Europe.
4. I work in ____control room operators.
5. We control ___ refinery.
6. I am ___ supervisor.
7. We refine ___ oil