FILL IN TO FIND THE SECRET MESSAGE

123456
Across
  1. 3. I'm a fruit. My color is created by mixing yellow and red. Write me in plural.
  2. 5. I am the house of SpongeBob
Down
  1. 1. Teachers write on me daily
  2. 2. A pink animal
  3. 4. It appears during the day and disappears at night
  4. 6. "niveau" in English