Перевести и заменить 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.Same 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 taperecorder has been bought by us recently.

1) We have seen the doctor there2) Mary will have put salad on the plate by 6 o'clock3) Nike has brought same water when we came into the house4) They have just eaten all cakes5) He has brought a box of chocolates for her6) Someone has opened the window when we entered the room7) The pupil-on-dirty has cleaned the blackboard by the end of the lesson8) My sister has already cleaned the floor9) My mother has just opened the door10) We have bought this taperecorder recently