VIII-PASSIVE; 1. A lot of people use cell phones .=> Cell phones 2. Nga does her homework every day.=> Her homework 3. Mrs Mai taught students 6c English.=>> Students 6c 4. He gave her some flowers yesterday .=> 5.They have finished their homework.=> Their homework 6. He has lost his keys for 2 days .=> His keys. 7.. They have done their homework.=> Theitr homework... 8.Do you clean the house evey day?.>........the house 9. Did you buy this dictionary two weeks ago?>............this dictionary. 10.Noone helped him with homework .=> He 11. Nam doesn't clean the house everyday .=> The house... 12. He didn't do housewrk yesterday .=> Housework...