The One and Only Ivan

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Across
  1. 2. Deep sadness caused by losing someone or something important.
  2. 4. Serious in manner or feeling, rather than playful.
  3. 5. A statement that you will do something or keep your word.
  4. 6. Worried about what might happen.
Down
  1. 1. To help someone feel less frightened or uncertain.
  2. 3. Something you remember from an earlier time.