Complete with the right plural

1. The police caught the thiefs thieves .
2. What are oxen oxes ox and geese geeses goose ?
   They are animals!
3. I bought beautiful scarf scarves scarfs yesterday.
4. Scientists formulate hypothesis hypotheses hypothesises before they carry out research.
5. I met the children childs those in the garden.
6. Did you put your baggage baggages in the car?
   Yes I did.
7. These wolfs wolves wolf are dangerous.
8. I found the information informations I was looking for.
9. It is difficult to change some religious beliefs believes belief .