funny riddles

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Across
  1. 2. how much days did the doctor tell the cancer patient had left
  2. 3. What can you catch but not throw? this question has a space
  3. 5. what number is the us scared of this question has a space
Down
  1. 1. what decreases but never increase this question has a space
  2. 4. what has a head a tail but no body