Use Passive voice:
1. Paul (send) to prison. (Future tense)

2. My brother (just beat) in the race. (Present perfect)

3. He (tell) to wait outside. (Past tense)

4. I (not pay) for the work. (Past tense)

5. Policemen (often ask) the way. (Present tense)

6. Their lawn (cut) once a week. (Present tense)

7. We (ask) by the police. (Future tense)

8. The towels (not use). (Past tense)

9. He (not sell) the jewels. (Present perfect)

10. They (teach) French. (Present tense)

11. The fire brigade (phone) soon after the fire had broken out. (Past tense)

12. You (laugh) at if you talk such nonsense. (Future tense)

13. All the fruits (eat up) by the guests. (Past tense)

14. The letter (answer) tomorrow. (Future tense)

15. Stamps (sell) here. (Present tense)

1. Paul will be sent to prison. (Future tense) 2. My brother has just been beaten in the race. (Present perfect) 3. He was told to wait outside. (Past tense) 4. I wasnt paid for the work. (Past tense) 5. Policemen are often asked the way. (Present tense) 6. Their lawn is cut once a week. (Present tense) 7. We will be asked by the police. (Future tense) 8. The towels werent used. (Past tense) 9. He has not been sold the jewels. (Present perfect). 10. They are taught French. (Present tense) 11. The fire brigade was phoned soon after the fire had broken out. (Past tense) 12. You will be laughed at if you talk such nonsense. (Future tense) 13. All the fruits were eaten up by the guests. (Past tense) 14. The letter will be answered tomorrow. (Future tense) 15. Stamps are sold here. (Present tense)