The correct subject pronoun is "usted" because it is the singular form of "you".
The answer is A. "Mis" is plural but it is not supposed to be.
You could use multiple words in that blank. For example:
Para el postre, quisiera pastel.
Para el postre, quisiera helado.
Answer: question 2 is C. Susana y yo VIVIMOS en un apartamento en la ciudad.
Hope this helps luv :)))
