I'm pretty sure you would put "Leo" in the blank space because the verb "leer" means to read and the sentence prior to the blank space says "the magazine 'Cosas (or Things)' is my favorite. I read it every month. Hope this helps!
Answer:
nacionalidad para el pais Españsa
Explanation:
...
1. Este
2. could be any of the three, but I’d go with esta
3. Esa
4. Aquella
These answers depend on how close or far the objects being described are from you, so I’m not sure if there’s any more context.
