If you try to mix oil and water, the oil _________ to the top and the water to the bottom.

Trang An Scenic Landscape Complex, ___________as a World Heritage Site, is famous for its cultural value, natural beauty, ____________ value, and preservation of heritage.

The excavation relics ____________ from the museum haven't been found yet.

Many scientists ________ the blame for recent natural disasters on the increase _________ the world's temperatures.

The Citadel gate _____________ in the storm has now been repaired.

Air water and soil are necessary things to our _________.

UNESCO's World Heritage List can be seen as a celebration of both the _________ of nature and the greatness of culture.