Đáp án:
24. Was Lulu fed last night?
=> Cấu trúc:  Was/Were + S + V3/ed + AV thời gian?
25. The pizzas will be brought to our house by Nick
=> Cấu trúc: S+ will be+ V3/ed + by (O cụ thể) 
26. Beer used to be drunk for breakfast in England years ago.
=> S+ used to be + V3/ed + AV thời gian + by(O)
27. The floor were being cleaned when i arrived 
=> S+ were/ was + being+ V3/ed+ by(o)
28. Have you ever been asked for your opinion?
29. It is believed that the company is losing a lot of money.
=> It + is/ was/ has been + V3/ed (believed/said/thought/claimed/reported) + that +..........
30. Someone will have to be got/gotten to see it. 
=> Cấu trúc: S+ will have to be+ V3/ed + by(O)
31. This cheque hasn't been signed.
=> Cấu trúc: S+ has/ have (not) + been+ V3/ed + by(O)
32.Thirty houses were destroyed by the tornado.
=> Cấu trúc: S+ were/was + V3/ed + by (O)

Bị động - các thì :

- Thì QKĐ:

(+) S + was/were +V3/ed 

(?) Was/Were +S + V3/ed?

- Thì TLĐ: S + will be + V3/ed

- S + used to be + V3/ed 

- Thì QKTD: S + was/were+  being + V3/ed 

- Thì HTHT:

(-) S + has/have+ not + been + V3/ed 

(?) Has/Have + S+ been + V3/ed?

- get + sth + V3/ed

-------------------------------------------------------

24. Was LuLy fed last night?

25. The pizzas will be brought to our house by Nick.

26. Beer used to be drunk for breakfast in England years ago.

27. The floor was being cleaned when I arrived.

28. Have you ever been asked for your opinion?

29. The company is believed to be losing a lot of money.

30. You will have to get it seen.

31. This cheque hasn't been signed.

32. Thirty houses were destroyed by the tornado.

`color{orange}{~LeAiFuRuiHuiBao~}`