Réponse :

Exercise 37

a. He was sold     b. They were whipped     c. It was written    

d. We were hidden     e. I was nicknamed

Exercise 38

a. Slaves were forced to work hard on the plantations

b. Runaways were helped by conductors

c. This book was written by a former slave

d. The museum was created to tell about that period

e. I was told that many masters were cruel

Explications :

prétérit à la voix passive : to be au prétérit+verbe au participe passé