Chuyển các câu sau sang câu bị động

1.Mary studies English four times a week..

2.They grow coffee in more than 50 countries around the world.

3. An old woman feeds the pigeons.

4. They deliver the milk every day.

5. He opens the door.

6.They wear blue shoes.

7.He doesn't open the book.

8.Does the police officer catch the thief?

9.They sing the song Auld lang Syne on some occations.

10.They perform water puppetry in a pool.

11.They make rice noodles from the best variety of rice.

12.Thousands of people visit the Hung Kings’ temple every day.

13. He eats four bowls of rice a day.

14. They speak English and French in Canada.

15. Mary read comic books every night.