`I.`

`1.` are made

`2.` were visited

`3.` reads

`4.` was paid

`5.` looks after

`6.` invented

Công thức chung của thể bị động:

- Active: S+ V+ O+ ... ( time )

- Passive: S+ (be)+ V-ed/3+ ....+ by ... ( time )

`II.` 

`1.` is used

`2.` am given

`3.` aren't taught

`4.` are caught

`5.` is closed 

`6.` are told 

Bị động của thì hiện tại đơn: S+ am/is/are+ P.P+ by ...

`III.` 

`1.` The football match was won by the team from London

`2.` They were invited to the birthday party last Friday

`3.` The house wasn't sold last month

`4.` Visitors were asked to turn their mobile phones off

`5.` My friends were found by the police after they got lost

`6.` The old lady was bitten by John's dog

Bị động của thì quá khứ đơn: S+ was/were+ P.P + by ...