1. Letters are typed in the office by Mary.

2. You’ll be helped by his father tomorrow.

3. The human life has completely been changed with science and technology.

4. This bottle was broken by Peter.

5. English is being learnt in the room.

6. My mind can’t be changed.

7. Has the work been finished by Tom?

8.Were some exercises given by the teacher?

9.Has the window of the laboratory been changed?

10.Is a poem going to be written?

11. Are big cakes being made for the party?

1. Letters are typed in the office by Mary.

2. You’ll be helped by his father tomorrow.

3. The human life has completely been changed with science and technology.

4. This bottle was broken by Peter.

5. English is being learnt in the room.

6. My mind can’t be changed.

7. Has the work been finished by Tom?

8.Were some exercises given by the teacher?

9.Has the window of the laboratory been changed?

10.Is a poem going to be written?

11. Are big cakes being made for the party?