100 - one hundred (200 - two hundred; 300 - three hundred; ...) hundreds of books

1,000 one thousand (2,000 - two thousand; ...)
thousands of pupils

1.000.000 one million (2,000,000 - two million; ...)
millions of people

1,000,000,000 one billion (2,000,000,000 two billion; ...)
billions of stars​

1. Bread is eaten every day. 
2. The letter was received yesterday. 
3. Nick wiil be sent to Moscow next week. 
4. I was asked at the lesson yesterday. 
5. I was given a very interesting book at the library last Friday. 
6. Many houses are built in our town every year. 
7. This work will be done tomorrow. 
8. This text was translated at the last lesson. 
9. These trees were planted last autumn. 
10. Many interesting games always are played at our PT lessons. 
11. This bone will be given to my dog tomorrow. 
12. We were invited to a concert last Saturday. 
13. My question was answered yesterday. 
14. Hockey is played in winter. 
15. Mushrooms were gathered in autumn. 
16. Many houses were burnt during the Great Fire of London. 
17. His new book will be finished next year.
18. Flowers are sold in shops and in the streets. 
19. St. Petersburg was founded in 1703.

1. Bread is eaten every day. 
2. The letter was received yesterday. 
3. Nick will be sent to Moscow next week. 
4. I was asked at the lesson yesterday. 
5. I was given a very interesting book at the library last Friday. 
6. Many houses are built in our town every year. 
7. This work will be done tomorrow. 
8. This text was translated at the last lesson. 
9. These trees were planted last autumn. 
10. Many interesting games are always played at our PT lessons. 
11. This bone will be given to my dog tomorrow. 
12. We were invited to a concert last Saturday. 
13. My question was answered yesterday. 
14. Hockey is played in winter. 
15. Mushrooms are gathered in autumn. 
16. Many houses were burnt during the Great Fire of London. 
17. His new book will be finished next year.
18. Flowers are sold in shops and in the streets. 
19. St. Petersburg was founded in 1703.