Question

Escreva as sentenças na voz passiva
A- Mary saw the pictures
B-The dog eats the ball
C-The teacher corrects the exercises
D-The music song boy

Answer 1

A) The pictures were seen by Mary
B) The ball was eaten by the dog
C) The exercises were corrected by the teacher

The last sentence doesn't make any sense, make sure if you wrote it correctly

Answer 2

a. The pictures were seen by Mary.

b. The ball IS EATEN by the dog.

c. The exercises ARE CORRECTED by the teacher.