Viết lại câu cho phù hợp

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?=>..
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......
.this dictionary.