1. rita writes letter
passive: the letter is writen by rita
2. she teaches the elementary students
passive: the elementary students are taught by her
3. Right now,
Sarah is writing the letter.
passive: Right now,
the letter is being written by Sarah.
4.Sam repaired the car.
passive: The car was repaired by Sam
5.The salesman was helping the customer when the thief came into the store.
passive: The customer was being helped by the salesman when the thief came into the store.
6.Sally is going to make a beautiful dinner tonight.
passive: A beautiful dinner is going to be made by Sally tonight.
7. Many tourists have visited that castle.
That castle has been visited by many tourists.
8. Chef Jones had been preparing the restaurant's fantastic dinners for two years before he moved to Paris.
passive: The restaurant's fantastic dinners had been being prepared by Chef Jones for two years before he moved to Paris.
9.At 8:00 PM tonight, John will be washing the dishes.
passive: At 8:00 PM tonight, the dishes will be being washed by John.
10. They will have completed the project before the deadline.
passive: The project will have been completed before the deadline.
semoga membantu :)