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1.　I have no life, but I can die. What am I?
2.　The more you share me, the less you have. What am I?
3.　I fly without wings, I cry without eyes. Wherever I go, darkness follows me. What am I?

Answer:
1. A battery. (Explain: A battery is not alive, but it can “die” when it runs out of power.)
2. A secret. (Explain: A secret loses its exclusivity when it is shared. The more people know about it, the less it remains a secret.)
3. A cloud. (Explain: Clouds move through the sky without wings. They “cry” in the form of rain, even though they have no eyes. And when they gather, they block the sun, bringing darkness or shadow)
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1. What has keys but can’t open locks? 　鍵があるのに、鍵穴を開けられないものは何？
2. What comes once in a minute, twice in a moment, but never in a thousand years? 「分（minute）」には1回、「瞬間（moment）」には2回出てくるが、「千年（a thousand years）」には一度も出てこないものは何？

Ansswers:
1. A piano. Explanation: In English, “keys” can mean both “metal keys” and “piano keys.” A piano has many keys, but they can’t open locks.
英語では「key」は金属の鍵とピアノの鍵盤の両方を意味します。ピアノにはたくさんの鍵がありますが、鍵穴は開けられません
2. The letter “m”. Explanation: “M” appears once in the word minute, twice in the word moment, and not at all in the phrase a thousand years. アルファベットの “M”。“M” は “minute” に1回、“moment” に2回登場しますが、“a thousand years” には全く登場しません。