1. the postbox (to empty) every day. 2. the stamps (to postmark) at the post office. 3. the letters (to sort) into the different towns. 4. the mail (to load) into the train. 5. the mailbag (to unload) after their journey. 6. the bags (to take) to the post office. 7. the postbox (to empty) yesterday. 8. my question (to answer) yesterday. 9. hockey (to play) in winter. 10. many houses ( to burn) during the great fire of london. 11. flowers (to sell) in shops and in the streets. 12. st.petersburg (to found) in 1703. 13. many houses (to build) in our town every year. 14. this text (to translate) at the last lesson. 15. we ( to invite) to a concert last saturday. 16. i (to give) a very interesting book at the library last friday. 17. these trees (to plant) last autumn. 18. this bone (to give) to my dog tomorrow. 19. mushrooms (to gather) in autumn. 20. this work (to do ) tomorrow. !

1. The postbox is emptied every day.
2. The stamps are postmarked at the post office.
3. The letters are sorted into the different towns.
4. The mail is loaded into the train.
5. The mailbag is unloaded after their journey.
6. The bags are taken to the post office.
7. The postbox was emptied yesterday.
8. My question was answered yesterday.
9. Hockey is played in winter.
10. Many houses were burnt during the Great Fire of London.
11. Flowers are seld in shops and in the streets.
12. St.Petersburg was found in 1703.
13. Many houses are built in our town every year.
14. This text was translated at the last lesson.
15. We were invited to a concert last Saturday.
16. I was given a very interesting book at the library last Friday.
17. These trees were  planted last autumn.
18. This bone will be given to my dog tomorrow.
19. Mushrooms are gathered in autumn.
20. This work will be done tomorrow.