Fill in by or with

1. The note was written ____ a pencil. 2. Dinner will be cooked _____ my aunt. 3. This story was told _____ famous traveler. 4. Meat is eaten _____ a fork and knife. 5. The report will be prepared _____ our manager. 6. The carpets are cleaned _____ a vacuum cleaner. 7. The rooms in the hotel are cleaned _____ maids. 8. The article was written _____ a young journalist. 9. The politicians were interviewed ____ reporters. 10. This star was discovered _____ our scientists.