The answer to that question is al… also these are the answers to the questions on that unit test
Question 1: Mi abuelo tiene (a farm)
Answer: una granja
Question 2: Vivo muy (far) de la escuela
Answer: lejos
Question 3: post office
Answer: el correo
Question 4: lejos
Answer: far
Question 5: what must come after the construction acabar de?
Answer: an infinitive verb
Question 6: ella
Answer: acaba
Question 7: grammatically correct
Answer: Voy a comprar comida
Question 8: grammatically correct
Answer: Mi mamá va al zoológico.
Question 9: a+el
Answer: al
Question 10: Carlitos is from Honduras
Answer: true
Question 11: Tegucigalpa is the smallest city in the country
Answer: false
Question 12: Carlitos lives in Tegucigalpa
Answer: false
Question 13: María asks Ernesto where he lives
Answer: true
Question 14: where does Ernesto live
Answer: close to the airport
Question 15: where does María live?
Answer: close to the bank