3 little pigs

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Across
  1. 1. Material used for making the strongest house. (6 letters)
  2. 4. the antagonist of the story
  3. 6. The creatures that build the houses. (4 letters)
  4. 7. A structure where people live. (5 letters)
Down
  1. 1. What the wolf does to try to destroy the houses. (5 letters)
  2. 2. Material used by the first pig. (5 letters)
  3. 3. Part of the house through which smoke escapes. (7 letters)
  4. 4. A material used for the second pig's house. (4 letters)
  5. 5. What is produced by fire or the sun. (5 letters)