Change the following sentences to the present continuous tense: "They dog barks." and "She combs her hair."

Here are the sentences changed into the present continuous tense:

9. They dog barks.

   • Assumption: The sentence is grammatically incorrect as written. Assuming the intended sentence was "The dog barks", the present continuous form is: $$\boxed{\textbf{The dog is barking.}}$$

10. She combs her hair.

    • Answer: $$\boxed{\textbf{She is combing her hair.}}$$