Замените формы глаголов Perfect Passive формами глаголов Perfect Active
1. The doctor has been seen by us there. 2. The salad will have been put by Mary on the plates by 6 o'clock. 3. Some water had been brought by Nick when we came into the house. 4. All the cakes have been just eaten by them. 5. A box of chocolates has been brought for her by him.
6. The window had been opened by someone when we entered the room. 7. The blackboard will have been cleaned by the pupil-on-duty by the end of the lesson. 8. The floor has already been cleaned by my sister. 9. The door has just been opened by my mother. 10. This tape-
recorder has been bought by us recently.