Coco Trivia

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What is the world's longest road tunnel?

Bolman water tunnel

Guangzhou metro

Channel Tunnel

Laerdal tunnel

Padlock

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Source:

Choice "A": Bolman water tunnel of users selected this choice.
Choice "B": Guangzhou metro of users selected this choice.
Choice "C": Channel Tunnel of users selected this choice.
Choice "D": Laerdal tunnel of users selected this choice.

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