1. Rewrite the sentences in the passive voice.

1. Radio was invented in Russia by Popov. 2. Every four years a new president is elected in the USA. 3. A bank robber was caught by the police last night. 4. Sorry, dogs are not allowed in our safari park. 5. My letter will be left by the postman by the door. 6. A delicious cherry pie has been made by my mum for dinner. 7. My clock was not repaired by George. 8. An interesting story is being told by my neighbor. 9. Some more articles about football can be written by my son. 10. Your bedroom must be cleaned by you tonight.