Answer:
It's C and D (The last two)
Explanation:
Because "has" and "he" are directed to a person, in this case "has" goes to someone you are talking to and "he" to yourself.
And yet "hay" or "había" does not go to someone in particular.
1. Clara no es cubana
2. Yo soy abogada
3. Tú eres secretaria
Creo que la respuesta es: tengo
The singular form is la mochila
