Change these sentences into passive voice (Chuyển các câu sau sang dạng bị động với thì hiện tại hoàn thành) 11. Have they built a new park near here? 12. Tracy has done homework already. 15. These kids have finished three English courses so far.

`11.` Has a new park been built near here?

`12.` Homework has been done by Tracy already.

`13.` Three English courses have been finished by these kids so far.

`@` `B`ị Động HTHT :

(`+`) S + have/has + been PII (by O)

(`-`) S + haven't/hasn't + been PII (by O)

( `?` )  Have/has + S + been PII (by O)?

Bị động - thì HTHT:

(+) S + has/have + been + V3/ed 

(-) S + has/have + not + been + V3/ed 

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

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11. Has a new park been built near here?

12. Homework has been done by Tracy already.

13. Three English courses have been finished by these kids so far.

`color{orange}{~LeAiFuRuiHuiBao~}`