chuyển sang bị động

1. A folk song is being sung by the girls. 2. Table tennis is being played by Mr. Thompson and his son at the moment. 3. A cake is being baked by my sister. 4. Three lunches are being served by the waitress now. 5. The newspaper is being read by my dad at this time. 6. Cookies are being sold for Christmas right now. 7. Its snack is being eaten by the dog. 8. The floor is being swept by me. 9. The ball is being thrown into a basket by Anna. 10. A present for his best friend's birthday is being chosen by Jimmy.