Answer:
1. Tú cantas.
2. Ellos conversan.
3. Tú y yo cenamos.
4. La profesora enseña.
5. Mis compañeros viajan.
Explanation:
identifying the person of the narrator, and the time in which it is indicated, we can correctly conjugate the verb, and that it has agreement with what is being expressed.
It would be: las chicas se peinan el pelo.
(you would move the se to the front of the word and then add the ellas conjugation to peinar) hope this helps!! :)