Reading Vocabulary Review

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Across
  1. 2. A cowardly person.
  2. 4. To stretch or strain one's neck.
  3. 5. To climb on all fours with some trouble.
  4. 7. Not very friendly.
  5. 8. Possibility.
  6. 11. Sharp.
Down
  1. 1. A question.
  2. 3. A thin strip of paper.
  3. 6. The soft material inside bones.
  4. 9. A narrow opening.
  5. 10. Healthy, robust.