IV.
1. A window is being cleaned by her.
2. A photo is being taken by Nina.
3. English is being learnt by Sam at the moment.
4. My house is being built.
5. A report is being written now.
6. Novels are being read right now.
7. The floor is being swept by someone.
8. My exercise is being done now.
9. My favorite songs are being sung by somebody.
10. My car is being fixed.

1. A merry song is being sung by the boy.
2. A kite is being flown by Mr. Brown and his son at this time.
3. Some wine is being drunk by the cat.
4. A snowman is being made outside by the penguin now.
5. Two diners are being served by the waiter at this time.
6. A novel is being read by my sister now.
7. Paintings are being sold now.
8. The floor is being vacuumed by mom.
9. The ball is being thrown into the basket by Mary.
10. A big bag of presents is being carried on Santa Claus's back.
11. Look! A piece of paper is being gnawed by the dog.

IV.

1. A window is being cleaned by her.

2. A photo is being taken by Nina.

3. English is being learned by Sam at the moment.

4. My house is being built by me.

5. A report is being written by them now.

6. Novels are read right now.

7. The floor is being sweeper by someone.

8. My exercise is being done by me now.

10. My car is being fixed by me.

...

1. A merry song is being sung by the boy.

2. A kite is being flown by Mr Brown and his son at this time.

3. Some wine is being drunk by the cat.

4. A snowman is being made outside by the penguin now.

5. Two dinners are being served by the waiter at this time.

6. A novel is being read by my sister now.

7. Paintings are being sold by them now.

8. The floor is being vacuumed by Mom.

9. The ball is being thrown into the basket by Mary.

10. A big bag of presents is being carried by Santa Claus on his back.

11. Look! A piece of paper is being gnawed by a dog.