Can you give more details or what your supposed to do?
Pida. "Dudo que él pida el permiso para hacer el concierto" would be correct.
Answer: tú eres responsable.
You are responsible.
Explanation: The subject in this sentence is "tú", that is the second-person in the singular, so the verb must be conjugated in this form. Tú eres.
The words are already in order