Answer:
The correct answer is La ventanilla.
Explanation:
Despite not having the list since it was not included in the question, I can tell you that "billetes" are bought at a "ventanilla".
As long as you have these kinds of exercises, and you have such a list of definitions, the best thing you can do is take a dictionary and look for each of these words there. Once you have the definitions it will be easier for you to find the correct answers.
<span> Yo hago yoga todos los días por sus beneficios de relajación.</span>
"Como estas" is the correct answer to be put in the blank.