Ex. 1
a) has been done, b) had been already washed, c) have been already bought, d) had been already finished, e) have been already washed
Ex 2.
a) My home work have been done. b) This book has been already read. c) When my mum returned home, my letter had been already written. d) When I finished this work, the windows had had been already washed. e) This tasty cake has been made (by her).
Ex. 3
1. The vase is broken. 2. The book is read. 3. When I came home, the supper had been cooked. 4. When she bought tickets, the movie had already started. -Это правильный перевод, но это предложение не в Passive vioce . Для Passive voice оно будет выглядеть так - When she bought tickets, the movie had been already started.