1ST BACH: KEY TO SOME SENTENCES FROM THE TEST

Active to Passive:
The doctor ordered blood tests for the patient
Blood tests were ordered for the patient
You can find the keys on the shelf in the kitchen
The keys can be found on the shelf in the kitchen
Have you invited Peter to the party?
Has Peter been invited to the party?
The chef prepares all the food with only the healthiest ingredients.
All the food is prepared with only the healthiest ingredients.
The police are watching him.
He is being watched by the police.
At half past three the waiters will be serving the main courses.
The main courses will be being served at half past three

Passive with two objects:
They showed their parents the pictures they'd painted
Their parents were shown the pictures they'd painted
The pictures they painted were shown to their parents

Does the hospital offer patients free parking?
Is free parking offered to patients?
Are patients offered free parking?

Causative Passive:
I'm going to see the optician today (tested)
I'm going to have my eyes tested today
Ella paid someone to clean her house (had)
Ella had her house cleaned.
Yvonne hired an interior designer to design her house.
Yvonne had her house designed.