1letters are typed in the office by mary

2 you will be helped by his father tomorrow

3 human life has been  completely changed by 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 I hadn't been told about it

8 her telephone number isn't known

9 the children will be brought home by my students

10 I was sent a present last week

11 they were given more information

12 all the workers were being instructed of the plans by the chief engineer

13 tea can't be made with cold water

14 some of my books have been taken away

15 the meeting will be hold before may day

16 the engine of the car has to be repaired

17 the window was broken and some pictures were taken away by the boys

18 a lot of money is spent on advertising by peter every day

19 a story is going to be told by teacher

20 a cake is being cut with the sharp knife by mary

21 the woman with the red hat was looked at by the children

22 the victims with food and clothing have been provided

23 english is spoken in almost every corner of the world 

24 this machine mustn't be used after 5:30 pm

25 the chalk board is erased by one of the students after class

26 is english taught here?

27 will she be invited to your wedding party?

28 has the work been finished by tom?

29 were some exercises given by the teacher?

30 has the window of the laboratory been changed?

31 is a poem going to be written?

32 are big cakes for the party being made ?

33 are inquires about the thief being made  by the police?

34 must the test be finished before ten?

35 will the children be brought home by buses?

36 has your homework been finished?