`2.` isn't used magic outside the school.

`3.` have been chosen to host a legendary event.

`4.` was sent to Azkaban.

`5.` could be expelled for that.

`6.` will be rewarded by him

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`+` Cấu trúc câu bị động:

`-` Thì Hiện tại hoàn thành: S + have/has + PII + (BY  O)

`-` Thì HIện tại đơn: S + am/is/are + PII + (BY  O)

`-` Thì Tương lai đơn: S + will + be + PII + (BY  O)

`-` Động từ khuyết thiếu: S + ĐTKT + be + PII + (BY   O)

`-` Thì Quá khứ đơn: S + was/were + PII + (BY  O)

2. Harry isn't used magic outside the school.

3. Hogwarts have been chosen to host a legendary event.

4. He was sent to Azkaban.

5. He could be expelled for that.

6. They will be rewarded by him if he is given Harry Potter.