Help me pleas ! Определить время : 6. Flowers are sold

1. Flowers are sold in shops and in the streets. - Present Simple Passive Voice.
2. St. Petersburg was founded in 1703. - Past Simple Passive Voice.
3. Bread is eaten every day. - Present Simple Passive Voice.
4. The letter was received yesterday. - Past Simple Passive Voice.
5. Nick will be sent to Moscow next week. - Future Simple Passive Voice.
6. I was asked at the lesson yesterday. - Past Simple Passive Voice.
7. I was given a very interesting book at the library last Friday. - Past Simple Passive Voice.
8. Many houses are built in our town every year. - Present Simple Passive Voice.
9. This work will be done tomorrow. - Future Simple Passive Voice.
10. This text was translated at the last lesson. - Past Simple Passive Voice.
11. These trees were planted last autumn. - Past Simple Passive Voice.
12. Many interesting games are always played at our PT lessons. - Present Simple Passive Voice.
13. This bone will be given to my dog tomorrow. - Future Simple Passive Voice.
14. We were invited to a concert last Saturday. - Past Simple Passive Voice.
15. Lost time is never found again. - Present Simple Passive Voice.
16. Rome was not built in a day. - Past Simple Passive Voice.