Bonjour, quelqu’un pourrait m’aider pour cette exercice je n’arrive pas a le faire svp

voix passive au présent = be (présent) + p. passé = a book is bought)

a- Children are introduced to the best directors in the film industry.
b- They are trained by the most influent actors.
c- They are prepared for their future career
d- They are auditioned after the first week.

voix passive preterit = be (preterit) + p. passé = a book was bought

a- We were given the opportunity to learn how to act with great actors.
b- We were told how to deal with stress.
c- We also were taught how to write a resume.
d- At the end of the two weeks I was asked to perform in front of professionals of film industry.