Using the perfect tenses. passive voice

example: they have already brought the medi­cine. — the medicine has already been brought.

1. we have repaired our house lately.
2. when the fire brigade came, the fire had destroyed the building.
3. the athlete has shown much better results since this coach trains him.
4. i will have answered all the business letters by noon.
5. the president of the board has signed the document.
6. is she washing the floor? — no, she has already washed it.
7. by his arrival they had repaired his car.