The student is from Spain. She sits by me.
The student who sits by me is from Spain.
Trucks collect the garbage on Wednesday.
The garbage is collected by trucks on Wednesday.
I have not read the contract. My husband signed it.
I have not read the contract that my husband signed.
The hurricane destroyed many homes.
Many homes were destroyed by the hurricane.
The secretary is experienced. I hired her.
The secretary who I hired is experienced.
The maid is cleaning our room.
Our room is being cleaned (by the maid).
I know a girl. Her parrot can talk.
I know a girl whose parrot can talk.
The workers were repairing the roads.
The roads were being repaired (by the workers).
The student is hungover today. Her birthday was yesterday.
The student whose birthday was yesterday is hungover today.
Someone has already eaten all the pizza!
All the pizza has already been eaten (by someone)!