1. This flower is watered by my father every morning.

2. Fiona was invited to his birthday party by John last night.

3. The dinner is being prepared in the kitchen by her mother.

4. Our teeth should be cleaned twice a day.

5. The English grammar has been explained by our teachers.

6. The heating system will be checked tomorrow.

7. These old pictures won't be hung in the living room.

8. This factory wasn't built by the German during the Second World War.

9. The letter was being delivered at 10 yesterday.

10. The story is going to be told in 10 minutes.

11. Your cat wasn't bitten by my dog.

12. The fire alarm is tested by the electricians weekly.

13. The photos of West Lake has just been taken by July.

14. The instruction ought to be read carefully.

15. Work will be finished by the team by 5. 

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