`I.`

`2.` The part of Hamlet will be played by Tom Smooth.

`3.` The window was used to open.

`4.` An ancient city has been found by a team of archaelogists.

`5.` The classroom window was broken by a ball.

`6.` The painting was bought by a Japanese millionaire.

`7.` The tomb of Tutankhamun was discovered by Howard Carter in 1923.

`8.` Susan's books are enjoyed by Millions of people.

`9.` A lot of pollution is caused by heavy traffic.

`II.`

`2.` The match will be played on Sunday.

`3.` Nowadays Many trees are cut for no reason.

`4.` Jim was asked to go to the police station.

`5.` My bike has been stolen.

`6.` Our new washing-machine was delivered yesterday.

`7.` The bank manager was kidnapped.

`8.` The museum will be rebuilt next year.

`->` Cấu trúc câu bị động:

`-` thì Quá khứ đơn: S + was/were + Ved/V3 + (BY  O)

`-` thì Hiện tại dơn: S + am/is/are + Ved/V3 + (BY  O)

`-` thì Hiện tại hoàn thành: S + have/has + been + Ved/V3 + (BY  O)

`-` thì Tương lai dơn: S + will be + Ved/V3 + (BY  O)