1.Honda cars are made in Japan.

2.Your dogs must br kept in the garden.

3.The library cards will be issued soon.

4.Passengers' tickets shouldn't be thrown away.

5.Dictionaries many not be used by candidates.

6.This could be done much more easily by a machine.

7.He will be seen off by his family at the airport.

8.He ought to be locked as he's a dangerous man.

9.Their weapons must be handed in.

10.Her homework has to be finished by Thuy tonight.

11.English is spoken by a large number of people today.

12.All her valuable jewelry were stolen last night.

13.John has just been examined by a doctor.

14.Many house in my neighborhood were destroyed by the fire.

15.Those books will be return to the library by Tom tomorrow.

16.Flight 202 has been delayed from Miami by bad weather.

17.Milk is used to make butter.

18.Your room must be kept tidy.

19.She wasn't seen at the party last night.

20.The regulation hasn't been changed by the government.

21.I wasn't introduced to her parents.

22.This window ought to be repaired.

23.Soccer is played all over the world.

24.We have just been told about that.

25.That note is being written by my sister in her notebook.

26.Those maps are kept on the shelves for renference.

27.My little sister was given ticket.

Or "Ticket was given to my little sister."

28.All the members have been invited to the party.

29.Banners and flags have been put up in the square.

30.The lion was ordered to lie on the floor by the tamer.

1. They make Honda cars in Japan.
⇒ Honda cars are made in Japan 
2. You must keep your dogs in the garden.
⇒ Your dogs must be kept in the garden 
3. We will issue the library cards soon.
⇒ The library cards will be issued soon by us
4. Passengers shouldn't throw away their tickers.
⇒ Their tickers shouldn't be thrown away by Passengers
5. Candidates may not  use dictionaries.
⇒ Dictionaries may be not used by Candidates

6. A machine could do this much more easily.

⇒This could be done much more easily by a machine.

7.His family will see him off at the airport.

⇒He will be seen off by his family at the airport.

8. He's a dangerous man. They ought to lock him up

⇒He ought to be locked as he's a dangerous man.

9.People must hand in their weapons 

⇒Their weapons must be handed in.

10.Thuy has to finish her homework tonight.

⇒Her homework has to be finished by Thuy tonight.

11. Today a large number of people speak English.

⇒English is spoken by a large number of people today.

12. Someone stole all her valuable jewelry last night

⇒All her valuable jewelry were stolen last night.

13. A doctor has just examined John.

⇒ John has just been examined by a doctor.

14.The fire destroyed many house in my neighborhood.

⇒ Many house in my neighborhood were destroyed by the fire.

15.Tom will return those books to the library tomorrow.

⇒Those books will be return to the library by Tom tomorrow.

16.Bad weather has delayed Flight 202 from Miam.

⇒ Flight 202 has been delayed from Miami by bad weather.

17. People use milk to make butter.

⇒ Milk is used to make butter.

18.You must keep your room tidy.

⇒ Your room must be kept tidy.

19. Nobody saw her at the party last night.

⇒ She wasn't seen at the party last night.

20.The government has not changed the regulation.

⇒The regulation hasn't been changed by the government.

21. She didn't introduced me to her parents.

⇒ I wasn't introduced to her parents.

22. Someone ought to repair this window 

⇒ This window ought to be repaired.

23.People play soccer all over the world.

⇒ Soccer is played all over the world.

24.They have just told us about that.

⇒ We have just been told about that.

25.My sister is writing that note in her notebook.

⇒ That note is being written by my sister in her notebook.

26.They keep those maps on the shelves for renference

⇒ Those maps are kept on the shelves for renference.

27.They gave my little sister ticket.

⇒ My little sister was given ticket.

28.They have invited all the members to the party.

⇒ All the members have been invited to the party.

29.They have put up banners and flags in the square.

⇒Banners and flags have been put up in the square.

30.The tamer ordered the lion to lie on the floor.

⇒The lion was ordered to lie on the floor by the tamer

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