what are peter and mike playing
how much is this dress
how does she often go to work
where does peter live
how much is the dictionary
why does she go to the doctor
what time does nam leave home
where are they painting some roses
why is the teacher angry 

7. Peter and Mike are playing football.
Peter and Mike are playing soccer.
8. This dress costs 150 dollars.
This dress costs 3429300 dongs.
9. She often goes to work by car.
She often goes to work by driving a car.
10. Peter lives America.
Peter lives in America
11. The dictionary is 200,000 dong.

12. She goes to the doctor because she is sick.
She goes to the doctor when she is sick.
13. Nam leaves home at 7 o'clock
Nam leaves home at 7 AM
14. They are planting some roses in the garden.

15. The teacher is angry because he doesn't do his homework.