Rewrite the sentences in passive voice

VII. Rewrite the sentences in passive voice.
1. People use the Internet all over the world.

2. Did the police find the missing girl?

3. Large numbers of tourists visit these tourist attractions annually.

4. They built Po Nagar Cham Towers to honour the goddess Po Nagar.

5. Tourists don’t visit this museum very often.

6. She bought all this cheese in France.

7. They didn’t invite me to their New Year party.

8. Do they sell mineral water in plastic bottles?

9. People consider the Imperial Academy the first university in Vietnam.

10. When did UNESCO recognise Ha Long Bay as a World Heritage Site?

- giải thích rõ ràng giùm với ạ ????????