1. These photos had been taken by the little girl

2. The tables had been cleaned by Joe

3. The passport had been lost before he went to the airport (we được lược bỏ trong câu BĐ)

4. A flight had been started (they được lược bỏ trong câu BĐ)

5. A lot of money had been saved 

6. The room had not been cleaned (I được lược bỏ trong câu BĐ)

7. The flowers had not been brought to the party

8. I had been taken to school by Susani

9. Had the trouble been solved by her?

10. Had the exam been passed by him?

`**`. Bị động QKHT

+) S + had been + p.p + (by s.one)

-) S + had not been + p.p + (by s.one)

?) Had + S + been + p.p + (by s.one)?

Wh_question) Wh.qu + had + S + been + p.p + (by s.one)?

1.These photos had been taken by the little girl.
2.The table had been cleaned by Joe.
3.The passport had been lost before he went to the airport.
4.A fight had been started by them.
5.A lot of money had been saved by me.
6.The room hadn't been cleaned by me.
7.The flowers had not been bought to the party by them.
8.I had been taken to school by Susani.

9.Had the trouble been taken by her ? 

10.Had the exam been passed by him ?
Good luck !!!