3. My father is reading a book
4. The students are doing their HW
5. They are brushing their teeth
6. Mr and Mrs Smith are travelling to Ha Noi
7. My sister doesn't doing her homework. She is sleeping
8. His parents doesn't working in the factory. They are doing the gardening
9. The girl doesn't doing the housework. She is watching TV
10. Does Nga is reading a book now?
11. Are they playing a game in the yard?
12. Is the children washing their clothes?
13. Does your mother travelling to Da Nang now?
14. What does Mr Hung reading now?
15. Does she travelling to work by car?