Chuyển đổi câu

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..