Language crossword

12345678
Across
  1. 3. Basic set of letters in the language.
  2. 5. One of the most popular languages in the world.
  3. 6. Structure of language
  4. 7. Language,on which over 1,3 billions oof people speaking.
  5. 8. Rules of behaving in society.
Down
  1. 1. A fruit.
  2. 2. Structured system of communication/
  3. 4. A language, which is not only used in France, but also in Canada
  4. 7. Enemy of a dog