Change these sentences to the passive.

1. No one has paid the bill.

2. Has the editor discovered the mistakes?

3. Walt Disney has made a lot of interesting cartoons.

4. Her knowledge about art hasn’t impressed me.

5. The lawyer has just discovered new evidence.

6. Mr. Hart hasn’t taught that course since 2001.

7. Has the special committee settled the dispute yet?

8. The pollution in the city has affected children’s breathing.

9. The chef has already prepared the food.

10. Has anyone fed the dog and the cat yet?