She cleaned the kitchen yesterday.
The kitchen was cleaned yesterday (by her).
The students completed the homework.
The homework was completed (by the students).
The company launched a new product.
A new product was launched (by the company).
They were painting the house all afternoon.
The house was being painted all afternoon (by them).
She was reading a book when I arrived.
A book was being read when I arrived (by her).
The kids were playing football in the park.
Football was being played in the park (by the kids).
Peter has written three letters today.
Three letters have been written today by Petter.
The engineers have built a new bridge.
A new bridge has been built by the engineers.
The teacher has corrected all the exams.
All the exams have been corrected (by the teacher).
The workers had finished the job before noon.
The job had been finished before noon (by the workers).
My mom had cooked dinner by the time they arrived.
Dinner had been cooked by the time they arrived by my mom.
The company had sold all the tickets before the show started.
All the tickets had been sold before the show started by the company.
He delivers the mail every morning.
The mail is delivered every morning (by him).
They publish a new magazine every month.
A new magazine is published every month (by them).
She teaches mathematics to the class.
Mathematics is taught to the class (by her).
The chef is preparing the meal right now.
The meal is being prepared right now (by the chef).
