Answer:
It should be a definite article since El libro - The book is a definite article and those two are similar noun
Explanation:
It can be THE binder or A binder
its b so, me duelen las piernas
is this on edge?
1-2. Tengo, tiene
3. Tienes
4. Tienen
5. Tiene
6. Tenemos, tiene
7. Tienen
8. Tienes, tengo
you just add five