Transform the following sentences into the passive form

1) They cleaned the car last week.

2) They haven't arrested the murderer.

3) They hunt grouse in Scotland.

4) Edison discovered the secret of electricity.

5) The dictator imprisoned the opposants.

6) The French invaded Egypt.

7) The government has voted a new constitution.

8) The home team lost the match.

9) The Indians have sang this song for centuries.

10) The orchestra will give a concert for Christmas.

11) His mother didn't wash his clothes.

12) The pupils will sing the national anthem.

13) Mice don't attack cats.

14) Jack didn't shut the garage this morning.

15) The Indians drink tea in the morning.

16) Peter is reading the letter.

17) You must change the bag every month.

18) The teacher will mark the copies on Monday.

19) People have seen wolves in Auvergne.

20) The children never eat caviar.