Answer:

Past indefinite tense structure :-

Active voice = Subject + v2 + object

Passive voice = Subject(object) + was/were + v3 + by + object(subject)

1) the film was directed by a great director.

Ans : A great director directed the film.

2) this house was built by my father.

Ans : My father built that house.

3) the letter was delivered by the postman.

Ans : The postman delivered the letter.

4) the injured dog was found by Amos.

Ans : Amos found the injured dog.

5) the plane was flown by the explorer.

Ans : The explorer flew the plane.

6) honey is made by bees.

Ans : Bees make honey

Explanation: