1. My father waters these flower trees every morning.
these flowers trees are watered every morning by my father 
2. John invited Fiona to his birthday party last night.
Fiona was invited to John birthday party last night
3. Her mother is preparing the dinner in the kitchen.
the dinner is being prepared by her mother in the kitchen
4. We should clean our teeth twice a day.
our teeth should be cleaned twice a day
5. Our teachers give us a free period this Saturday to prepare the festival. 
a free period is given to us this saturday by our teacher to prepare for the festival
6. He often does exercises every night.
exercises are often done every night
7. She usually decorates the room at weekends.
the room is usually decorated at weekends
8. Daisy always sings country songs.
country songs are alwways sung by daisy