1. The teacher is going to tell a story.
a story is going to be told
2. Mary is cutting the cake with a sharp knife.
the cake is being cut with a sharp knife
3. The children looked at the women with a red hat.
the woman with a red hat was looked at by the children
4. They have provided the victims with food and clothing.
the victims have been provided with food and clothing
5. The teacher explains the lesson.
the lesson is explained by the teacher
6. Mrs Green is cooking the food in the kitchen.
the food is being cooked in the kitchen by mrs green
7. The doctor examined the patients.
the patients were examined by the doctor
8 These boys made that noise.
that noise was made by these boys
9 People speak English all over the world.
english is spoken all over the world
10 He gave him back the money last Sunday.
he was given back the money last sunday
11. I can’t do these exercises quickly.
these exercise can't be done quickly
12. She had finished the report by noon.
the report had been finished by noon