Answer:
Yo abro la puerta para mi abuela.
Explanation:
When we complete sentences we must take into account the grammatical person that is being raised, thus we will be able to conjugate the verb correctly, keeping relation to what you want to express.
Yo abro la Puerta para mi abuela
you click on the blanks lol
XD
Empiezo = I start
Empiezas = You start
Empieza = He/she starts
Empezamos = We start
Empezáis = You all start
Empiezan = They start