Crossword time!

123456
Across
  1. 3. a painful red area on foot caused by cold weather
  2. 4. it is used to pick food stuck in your teeth (compound word)
  3. 5. the red box where you post a letter (compound word)
  4. 6. serious or determined
Down
  1. 1. horrified
  2. 2. painting or covering that makes them blend in with their surroundings