Answer:
A) Do unto others what you would have them do to you.
Explanation:
Part 1.
Number 1. Nosotros.
Number 2. Ellas.
Number 3. Ella.
Number 4. Tu.
You are using "SER" which is the to be. I have to go but I wish I can help with the second. Bye!
Answer:
Tú estás nervioso porque tiene un examen hoy
Explanation:
You are nervous because you have an exam today
