For me I would put:
Question 17: Ir a un concierto.
Because you don't just go to a concert in your free time.
Question 18: 3124
no puedo ir al cine
Answer:
I think its A. Anoche, El otro dia
Explanation:
An Imperfect tense is not a specific time.... B says that frequently and always so you could guess its every day, C Yesterday and last week is half right half wrong so it isnt is, and D Last year and never is as well half and half... hope I helped you in any way ,:)
What are you supposed to do