1. The company is __________ serious financial difficulties at the moment.

2. I met my old school friend __________ the way to the airport.

3. He was very disappointed __________ the service at the restaurant.

4. There is a large sign __________ the entrance to the building.

5. The car was traveling __________ 100 kilometers per hour.

6. I'm sorry, I'm __________ duty today and cannot talk for long.

7. She is very sensitive __________ cold weather, so she wears extra layers.

8. The information in this brochure is __________ of date.

9. I'm not __________ the mood to go to the cinema tonight.

10. There has been a huge increase __________ the price of electricity.

11. The children are __________ the care of their grandmother this week.

12. He shouted at me __________ the top of his voice.

13. I'm sorry, I'm __________ a hurry and can't talk right now.

14. The plane was forced to land because of a fault __________ the engine.

15. Are you __________ good terms with your new neighbors?

16. I heard the news __________ the radio this morning.

17. The two countries have been __________ war for over three years.

18. There has been a significant increase __________ the number of tourists.

19. You can contact us __________ email or by phone.

20. He is a specialist __________ ancient Greek history.

21. The keys are hanging __________ the hook behind the door.

22. I’m writing to you __________ behalf of my manager.

23. She has a lot of influence __________ the younger members of the team.

24. The exhibition is __________ display until the end of the month.

25. I didn't do it __________ purpose; it was a complete accident.