Answer:
1. Look! He is dancing.
2. Listen! Mary is singing.
3. What are you doing? – I am reading a book.
4. Where are you doing? – I am going shopping.
5. I am busy. I am washing my dress.
6. Is Sasha free? – No, she is cooking lunch.
7. Where are the children? – They are playing football outside.
8. Where are you? – We are at home, we are cleaning the house.
9. At the moment my friends are taking part in the competition.
10. Mother and her child are making a toy at present.
11. The dogs are running about the garden.
12. Silence! The cat is catching a mouse.
13. Don’t shout! The students are having a class in the next room.
14. I am not happy. I am preparing my homework.
15. What are you working at?