@Bơ Bơ
14. Flowers are not sold in that street.
15. That room is cleaned everyday.
16. What has been known by you?
17. By whom is her test finished?
Hoặc: Who is her test finished by?
18.
PRACTISE:
1. Your exercises must be done.
2. Meat should be kept in the fridge.
3. A meeting will be held in our school.
4. The bill will not be paid.
5. These books have to be returned into the library.
6. This window ought to be repaired.
** sorry bạn ạ câu 18 mình không biết.