Correct the sentences. Three are OK.

Popraw zdania błędne. Trzy są poprawne. Jeżeli uważasz, że zdanie jest poprawne, wpisz "OK" w polu odpowiedzi.
1. I were doing homework.
2. We was eating ice-cream.
3. Jim and Sarah were working all day.
4. Peter was type a letter.
5. I was carrying a box when I fell over.
6. I was talk to my sister.
7. The dog running in the park.
8. My friend smoking a cigarrette.
9. My mother was cooking.
10. We were learn how to swim.