`11`. A garage was built at the end of last year.

- Bị động thì quá khứ đơn ( + ) S + was/ were + Vpp + (by O)

(Câu `15, 16, 17`)

- build - built - built: xây dựng

`12`. A large sum of money had been lost.

- Bị động thì quá khứ hoàn thành ( + ) S + had been + Vpp + (by O)

(Câu `14`)

- lose - lost - lost: đánh mất, lạc mất

`13`. It wasn't returned to him.

- No one: Không ai -> Mang nghĩa phủ định

- Bị động thì quá khứ đơn ( - ) S + was/ were + not + Vpp + (by O)

`14`. It had been wrapped up in a newspaper.

`15`. More money was sent.

`16`. All Sam's money was paid back in this way.

`17`. This bridge was built by a prisoners of war in 1942.

`18`. The old theatre is being pulled down.

- Bị động thì hiện tại tiếp diễn ( + ) S + am/is/are + being + Vpp + (by O) (Câu `20`)

`19`. Why wasn't the roof mended before it fell in?

- Bị động thì quá khứ đơn ( ? ) (WH-words) + was/ were + S + Vpp + (by O)?

`20`. She is being given a big pay rise next month.

- give - gave - given: cho

`-` BĐ :

`+` QKĐ : S + was / were + VpII ( by O )

`+` QKHT : S + had been + VpII ( by O )

`+` HTTD : S + is / am / are + being + VpII ( by O )

`11`.A garage was built at the end of last year

`12`.A large sum of money had been lost

`13`.It wasn't returned to him

`14`.It had been wrapped up in a newspaper

`15`.More money was sent

`16`.All Sam's money was paid back in this way

`17`.This bridge was built by prisoners of war in 1942

`18`.The old theatre is being put down 

`19`.Why wasn't the roof mended before it fell in ?

`20`.She is being given a big pay next month

`\text{# Eternal}`