Are the following sentences in the active or the passive form? Rewrite them in the opposite form, when the subject isn't clear use someone/something.
Example: The burglar was arrested Passive
Someone arrested the burglar
1. Gordon's been sent to prison.
2. Mike's opened a new shop in London.
3. Rosie and Greta are eating melon by the beach.
4. I was recommended a doctor by my brother.
5. They wanted more children.