Rewrite the sentences in Past Simple Passive.
Example: The students wrote letters. Letters were written by the students.
1. Our dog did not bite the cat.
2. The mechanic repairs the car.
3. They understand Spanish.
4. The electricians test the fire alarm.
5. My friend bought a new car.
6. John cleaned the bathroom.
7. Levi Strauss invented the blue jeans.
8. They developed a new kind of washing powder.
9. Snow covered the mountains.
10. The lady gave me the keys.
11. The students handed in the reports.
12. Sue puts the rucksack on the floor.
13. The policemen help the children.
14. Mother waters the flowers.
15. They sing the song very well.
16. Postman delivers letters at 8 everyday.
17. They make these cars in Japan.
18. Someone smashed our window last night.
19. My parents gave me some pocket money.
20. They told bad news to her.
21. She sent information to Ann.
22. He gave them a new chance.
23. They grow coffee in Kenia.
24. The Romans built the bridge 2000 years ago.
25. The thunderstorm damaged some houses.
Archimedes. Why in the first place was the ancient Greek scientist? First of all, because he is one of the greatest mathematicians of all times, close he came to the calculation of the number of "PI". Today all students and students of the daily study and enjoy the discoveries of the Greek. Also Archimedes was famous for the invention of many useful machines. Among these are the siege guns, and mirrors, поджигающие sails on the Roman ships by focusing sunlight. Archimedes made the first theorist of mechanics. For example, he presented the complete theory of the lever, applying it in practice. Also, scientists have developed a Archimedes screw (screw), with the help of which вычерпывается water and the present day. The primacy of the inventor of merit - all of it was opened more than two thousand years ago, when there were no computers, no technology available today, the inventors. Archimedes, perhaps, he studied in the libraries of Alexandria, but most of his knowledge was acquired independently.