Ex 5 .

2 do ,do , am

3. are , going , am going

4 . are doing

5 . plays

6 . is flying

7 . is singing

8. go , go

9 . brushes , is brushing

10 . play , playing

II. 

1. Miss. Nhung ( ride )...rides.... her bike to work

2. Do You ( wait)....wait...... for your teacher?

3. I ( play)...am playing.... video games and my sister ( watch ) ....is watching.........TV

4. She ( not )......doesn't.......... travel to the hospital by bus but she ( drive)....drives.........

5. We ( sit) ...are sitting......in the living room

6. What are the farmers (do)...doing....?

    - They ( unload)...are unloading.......the vegetables.

7. Where is he ( fly)....flying.....? – to Ho Chi Minh City

8. I (eat)....eat....my breakfast at a food store

9.is listening

10.is having

11.isn't working

12.aren't

13.are playing

14.is coming

15.do you do 

16.read