Passive voice

A pilot drives a F1 car. Graham Bell invented a telephone. People spoke Latin in old Rome. A snake bit him in the woods. People celebrate Christmas every year in December. People wear t-shirts in summer. They showed a new film last month. The Vikings founded Dublin in 988. Vincent van Gogh painted The Starry Night. 1000 people attent this exhibition every month. Our boss signed a new contract two days ago. A lot of people watch this programme. Mr Green teaches Biology. Authors write books. They invited you to the wedding. A British tourist discovered this island. Several million tourists visit London every year. Laura gave that. Simon calls Sally every Monday. The burglar took a necklace.