题目内容

Let's chant(说说唱唱)

  Y Y Y Y Y? Why is it yellow?

  Why this? Why that? I don't know why...

  Y Y Y Y Y? Why is he young?

  Why this? Why that? I don't know why...

  Y Y Y Y Y? Why can it fly?

  Why this? Why that? I don't know why...

  Why? Why? Why?

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