What has keys but can’t open locks?
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The answer is: Keyboard.
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I speak without a mouth and hear without ears. What am I?
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The answer is: Echo.
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The more you take, the more you leave behind. What are they?
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The answer is: Footsteps.
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I have cities, but no houses; forests, but no trees. What am I?
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The answer is: Map.
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