Ответ:

1. Where do people speak English?

Many countries are spoken English by people.

2. When do they serve breakfast?

Breakfast is served at eight o'clock every day by them.

3. What has someone stolen?

Jim's bike has been stolen by someone.

4. What will they deliver on Monday?

My computer will be delivered on Monday by them.

5. Who has given Mrs Jones some letters?

Some letters have been given Mrs Jones by the secretary.

6. Who must give the message to the right person?

The message must be given to the right person by him.

7. Who teach our students English and French?

English and French are taught our students by us.

8. Who is going to send her some flowers?

Some flowers is being sent her by someone's.

9. Has a better job offered by him?

10. What are they building?

A new ring-road round the city is being built by them.