Помогите пожалуйста переделать предложения в Passive Voice

1. His question was answered yesterday.
2. This bone will be given to my dog tomorrow.
3. Were these trees planted last autumn?
4. These paintings are shown in our gallery every year.
5. This TV program is usually watched by millions of people.
6. We were invited to the concert last Sunday.
7. You will not be paid next month.
8. When was your letter sent?
9. A lot of houses are built in our city every year.
10. Those rooms are not often cleaned.

1. He will be met at the station by...
2. Are the flowers sold in that shop?
3.That film was made by a famous director.
4. The Pyramids were built by Egyptians.
5.The President is elected by people every four years.
6.That car wasn't bought by him.
7. That bag was left on the train by somebody.
8. Christmas is celebrated in winter by English people.
9. The test will be written next Monday by them.
10. Are the animals fed every day?

1. This water is not used for drinking.
2. Was his bicycle stolen last evening?
3. This church was built in the 17th century.
4. We will be asked in the next lesson.
5. This information was found in the Internet.
6. England is separated from Scotland by mountains.
7. These islands were discovered by Spanish sailors.
8. Football is played all over the world.
9. The window wasn't closed.
10. This play will be put next month.

Очень много, напишу несколько в начале. 1.was answered; 2.will be given; 3.Were these trees planted? 4.are shown; 5.is usually watched; 6.were invited; 7.you won't be paid; 8.When has your letter been sent?9.are built; 10.aren't often cleaned;