Помогите пожалуйста по английскому...

Make the following sentences
singular (if possible).

 


1. My teeth ache. 2. There are interesting flies
in Nick’s collection. 3. The families are happy.   4. The friends of mine are coming to stay at
week-end. 5. Tom’s parents are very nice people.    6. The mice are grey. 7. The oxen are in
the yard. 8. What are the chances of success? 9. There were several small
losses. 10. We took the children to the Zoo. 11. Crime is a problem in most big
cities. 12. Do you know the people who live next door? 13. All cars have
wheels. 14. The days are long in summer. 15. The nurse’s wages were good. 16.
The women are in the shop, the men are in the bar. 17. Take these loaves. 18.
The knives are sharp. 19. What are the criteria for this estimation? 20. Ted
had no stimuli to get a higher education