1

1. Is

2. Are

3? Is

4. Is

5. Is

6. Is

7. Are

8. Is

9. Are

10. Are

1. His exercise is done every morning

2. I am called by somebody every day

3. The floor is cleaned twice a day by Sam

4. A chocolate cake is eaten by us

5. This house is sold by them

6. A letter is written by William

7. The dishes are washed by her every day

8. This song is sung by everyone

9. The floor is swept by him

10. My dog is taken care of by me

III

1. Was repaired

2. Will be bought

3. Are being watered

4. Will have been learnt

5! Is watched

6. Has been read

7. Was stolen

8. Was broken

IV

1. Letters are typed in the office by Mary

2. You will be helped by his father tomorrow

3. Human lufe 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 by anyone

7. I hadn't been told about it

8. Her telephone number isn't known by me

9. The children will be brought home by my students

I.

1. is

2. are

3. is

4. is

5. is

6. is

7. are

8. is

9. are

10. are

II.

1. His exercise is done every afternoon

2. I am called every day

3. The floor is cleaned by Sam twice a day

4. Chocolate cake is eaten

5. This house is sold

6. A letter is written by William 

7. The dishes are washed every day

8. This song is sung

9. The floor is swept

10. My dog is taken care of

III.

1. was repaired

2. will be bought

3. are being watered

4. will have been learned

5. was watched

6. has been read

7. was stolen

8. was broken

IV.

1. Letters are typed in the office by Mary

2. You will be helped by his father tomorrow

3. Human life has completely been changed by science and technology

4. Peter's bottle was broken

5. English is being learned 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