Transform the following sentences from active to passive voice. Use the by-agent only if it is necessary.
2. A police officer questions the murderer.
3. They have repaired the road.
4. We haven't used this machine for years.
5. The judge sentenced the robbers to thirty years in prison.
6. The murderer will kill the young woman.
7. They will load the lorry within two hours and a half.
8. The police arrested the thief at midnight.
9. The Inspector locks the young man into a cell.
10. Someone will soon develop the first workable speaking dictionary.
11. They have already discussed this question.
12. You must not take away these books.
13. The children will do the housework.
14. You can either use a fountain-pen or a ball-pen.