| A | B |
|---|
| Her mother cooks a dinner. | A dinner is cooked by her mother. |
| The boy is making the homework. | The homework is being made by the boy. |
| Those people have constructed that building. | That building has been constructed by those people. |
| The girl helped the senior. | The senior was helped by the girl. |
| The teacher was preparing a test yesterday. | A test was being prepared by the teacher yesterday. |
| The boy had played soccer in the yard for two hours. | Soccer had been played by the boy for two hours in the yard. |
| Mary will create a new proyect at the new company the next month. | A new proyect will be created by Mary at the new company the next month. |
| Helen and her mother are going to prepare the food for the party. | The food for the party is going to be prepared by Helen and her mother. |
| NASA will have sent a new satellite to get information about Mars. | A new satellite will have been sent by the NASA to get information about Mars. |
| The police had captured the robber two weeks ago. | The rober had been captured by the police two weeks ago. |
