Rewrite the following sentences using the impersonal passive

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IV. Rewrite the following sentences using the impersonal passive.
1. People say that Ha Long Bay consists of about two thousand islands.
2. They thought that the temple had been destroyed by a fire.
3. The police have reported there is an accident on the road to Sa Pa.
4. We are expecting the park will be recognised as a World Heritage Site by
UNESCO next year.
5. Many people will claim the rule of the game is too complicated.
6. We know that Trang An Scenic Landscape Complex was selected for filming
"Kong: Skull Island".
7. Everyone believes Son Doong Cave is one of the largest caves in the world.
8. They estimated one million foreign tourists visited Viet Nam in December 2015.
9. We have understood that protecting natural wonders has many benefits.
10. People hope that this complex of monuments will be open to the public soon.