Tom was afraid to stay in the cave.

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The American Museum of Natural History’s “Creatures of Light” exhibit features jellyfish that glow green, anglerfish whose lantern-like bulbs dangle from their foreheads and luminous glowworms that hang mucus-like strands from cave ceilings to attract and ensnare their prey.

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How many caves are there in this area?

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A remote Iranian desert city, Ice Age-era caves in Germany and a stone wharf in Brazil built for arriving African slave ships are three new additions to UNESCO's list of World Heritage sites.

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The explorers discovered a skeleton in the cave.

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Tom will be the first person to enter the cave.

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You wake up lying on the rocky floor of a dark cave. A little light filters down from above. You can just make out a couple of openings leading away from the cave. What do you do now?

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A dragon lives inside the cavern.

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Tom found a skeleton in the cave.

Source: Tatoeba