1. This flower is watered by my father every morning (chia HTĐ)

1. Fiona was invited to John's birthday party last night (chia QKĐ)

3. The dinner is being prepared in the kitchen by her mother (chia HTTD)

4. Our teeth should be cleaned twice a day (chia HTĐ)

5. The english grammar has been explained by our teachers (chia HTHT)

6. The accident was caused by some drunk drivers in this city (chia QKĐ)

7. Tom's parents will be visited next month (chia TLĐ)

8. the secretary wasn't phoned by the manager this morning (QKĐ)

9. Was this beautiful dress made by Mary? (chia QKĐ)

10. These old pictures won't be hung in the living room (chia TLĐ )

11. This factory wasn't built by the german during the second world war (chia QKĐ)