The first blank corresponds to the world Síganme which is the imperative form of seguir.
The second blank corresponds to the world dígame which is the imperative form of decir.
Let me also translate the text for you:
Agent: well, you already saw the garden. Now follow me/síganme I want to show the inside of the house.
Cecilia: Wow! such a beautiful hallway! there is a lot of natural light here, but tell me/dígame Mr. Orozco, there is only one entrance?
What is the question? The translation of the sentance is “ Which of the languages is not derived from Latin (romance)” but i don’t know if that is what you are looking for
Ser conjugations:
sorry if this is hard to read let me know if i should rewrite it
Un, an easy way to tell is through the ending vowel.
The 'o' in boligrafo is masculine, so the there are two automatic answers brought forward, 'un', and 'el'.
Then, in english, it would be like saying 'the' or 'a' whereas the is either 'el' or 'la', while a a 'un' or 'una' respectively.