McMurdo Station, a research center in Antarctica, is located in one of the most remote _________ of the world.
A. region
B. regions
C. regional
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Calakmul is one of the largest Mayan cities ever found, but because it is _________ in the jungles of southern Mexico, this ancient settlement is hard to visit.
A. hide
B. hiding
C. hidden
During his many trips to remote regions, British explorer Ranulph Fiennes has _________ frostbite -- an injury caused by extreme cold -- several times.
A. experienced
B. experiences
C. experiencing
The underground city of Derinkuyu in Cappadocia is very large, but the city recently discovered underneath Nevsehir is even _________.
A. massive
B. more massive
C. the most massive
The northernmost town in the world, Ny-Alesund, which has a population of just over 30 people, is _________ on the island of Spitzbergen, Norway.
A. locate
B. located
C. location