Заполните пропуски предлогами 1. Youssef's party is _ 4 o'clock _ Friday 2. The Russian Federation is the largest country

1. Youssef\'s party is at 4 o\'clock on Friday. 2. The Russian Federation is the largest country in the world. 3. Ann is the shortest of Mary\'s friends. 4. She is keen on history. 5. My aunt says she likes living in the countryside. 6. It was very kind of him to help us. 7. I haven\'t had any contacts with her since we left University. 8. It was very far. We went there on foot. 9. I usually go to work by underground. 10. My husband works for an international company. He often goes for business to different countries.