Đáp án:

$1$ `:` He was rescued out of the fire by the brave firefighter.

Bị động QKĐ:

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

$2$ `:` A big number of buildings in the city has been destroyed by the earthquake.

Bị động HTHT:

`( + )` `:` S `+` have / has `+` VpII `+` ( by `+` O ).

$3$ `:` Why weren't us sent an ambulance ?

Bị động QKĐ:

`(  ?  )` `:` ( Wh_Question ) `+` was / were `+` ( not ) `+` VpII `+` ( by `+` O ).

$4$ `:` A lot of clothes, food and drinks were donated to support the victims of the. flood.

Bị động QKĐ:

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

$5$ `:` He was taken to the hospital for an immediate surgery.

Bị động QKĐ:

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

`1` . He was rescued out of the fire by the brave firefighter

`⇒` `S` `+` was / were `+` $V_{pll}$  `+` `(` `by` `+` `0` `)` $\text{( Bị động QKĐ )}$

`2` . A big number of buildings in the city has been destroyed by the earthquake

`⇒` `S` `+` have / has `+` $V_{pll}$ `+` `(` `by` `+` `0` `)` $\text{( Bị động HTHT }$

`3` . Why weren't us sent an ambulance ?

`⇒` `(` Wh_Question `)` `+` was / were `+` `(` not `)` `+` $V_{pll}$ `+` `(` `by` `+` `0` `)` $\text{( Bị động QKĐ )}$

`4` . A lot of clothes, food and drinks were donated to support the victims of the flood

`⇒` `S` `+` was / were `+` $V_{pll}$ `+` `(` `by` `+` `0` `)` $\text{( Bị động QKĐ )}$

`5` . He was taken to the hospital for an immediate surgery

`⇒` `S` `+` was / were `+` $V_{pll}$ `+` `(` `by` `+` `0` `)` $\text{( Bị động QKĐ )}$

$#Zen$