The Sahara is the largest hot ___________ in the world.
desert
A _________ is water that falls from a high place into a river or pool
waterfall
Phu Quoc is a famous _________ in Vietnam.
island
a natural underground space large enough for a person to enter, usually found in a hill, cliff, or mountain. What is it called?
cave
We enjoyed the amazing __________ of the night sky.
scenery