Grammer puzzle

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Across
  1. 3. A short word that connects sentences or clauses (2 letters).
  2. 5. The person, place, or thing that a sentence is about (3 letters).
  3. 7. A punctuation mark used at the end of a question (2 words).
  4. 8. The plural of "child" (6 letters).
Down
  1. 1. A word that describes a noun (6 letters).
  2. 2. A word that shows the relationship between a noun and other words (7 letters).
  3. 4. A word that describes an action or state (5 letters).
  4. 6. A word that takes the place of a noun (3 letters).