| A | B |
| The teacher advised the children to study for the test. | The children were advised by the teacher to study for the test. |
| The government doesn't allow people to smoke in public places. | Smoking in public places is not allowed by the government. |
| Yesterday I asked her to help me with my homework. | She was asked by me yesterday to help me with my homework. |
| The students might have caused the fire. | The fire might have been caused by the students. |
| Jonh challenged his friend in the game. | Jonh's friend was challenged by him in the game. |
| My mother has chosen to buy a car instead of rebuilding the house. | Byuing a car has been chosen by my mother instead of rebuilding the house. |
| I convinced her to take that job last week. | She was convinced by me to take that job last week. |
| My father has enabled me to travel alone. | I was enabled by my father to travel alone. |
| Mary encourages her daughter to do exercises. | Mary's daughter is encouraged by her to do exercises. |
| Chidren expect gifts at Christmas. | Gifts are expected by children at Christmas. |