1. Milk can be used for making butter and cheese.

2. Bottles of milk are brought to houses by the milkman.

3. Many accidents are caught by careless driving.

4. The river banks are covered by weeds.

5. English is spoken all over the world.

6. The house isn't used very often.

7. Is French spoken in this school ?

8. A lot of beautiful toys are made from recycled plastic.

9. The streets are cleaned by the workers everyday.

10. Are the concerts usually hold at the university ?

1. Milk can be used for making butter and cheese 

2. Bottles of milk are brought to houses by the milkman

3. Many accidents are caught by careless driving

4. The river banks are covered by weeds

5. English is spoken all over the world

6. The house isn't used very often

7. Is French spoken in this school ?

8. A lot of beautiful toys are made from recycled plastic by them

9. The streets are cleaned everyday by the workers

10. Are the concerts usually hold at the university ?

$\text{*Note: Sử dụng cấu trúc: S + am/ is/ are + V(PII) + ... + (by + O)}$