1. Bread (to eat) every day. 2. The letter (to receive) last week. 4. I (to ask) at the lesson yesterday. 5.I (to write) on Friday. 6. Many houses (to build) in our town every year. 8. Please, read the text (to translate) at the last lesson. 9. These trees are good for games always (to play) at our PT lessons. 11. This is a great opportunity (to invite) to a concert last Saturday. 13. My question is about my son's (to play) in winter. 15. Mushrooms (to gather) in autumn. 16. The Great Fire of London. 17. His new book (to finish) in 2023. 18. Children (to play) in the streets. 19. St. Petersburg (to found) in 1703.

Решение:

• 1. Bread is eaten every day. (Present Simple Passive, так как хлеб едят, а не он сам ест).
• 2. The letter was received last week. (Past Simple Passive, действие произошло в прошлом).
• 4. I asked at the lesson yesterday. (Past Simple, действие произошло вчера).
• 5. I write on Friday. (Present Simple, регулярное действие по пятницам).
• 6. Many houses are built in our town every year. (Present Simple Passive, так как дома строят, а не они сами строятся).
• 8. Please, read the text to be translated at the last lesson. (Инфинитив в пассивном залоге, так как текст предназначен для перевода).
• 9. These trees are good for games always played at our PT lessons. (Причастие прошедшего времени, относящееся к играм, которые играют).
• 11. This is a great opportunity to invite. (Инфинитив, показывающий цель или возможность).
• 13. My question is about my son's playing in winter. (Герундий после предлога 'about' и притяжательного местоимения 'son's').
• 15. Mushrooms are gathered in autumn. (Present Simple Passive, так как грибы собирают).
• 16. The Great Fire of London happened in 1666. (Past Simple, событие произошло в прошлом).
• 17. His new book will be finished in 2023. (Future Simple Passive, действие произойдет в будущем).
• 18. Children are playing in the streets. (Present Continuous, действие происходит в данный момент).
• 19. St. Petersburg was founded in 1703. (Past Simple Passive, действие произошло в прошлом).

Ответ: 1. is eaten 2. was received 4. asked 5. write 6. are built 8. to be translated 9. played 11. to invite 13. playing 15. are gathered 16. happened 17. will be finished 18. are playing 19. was founded