Answer: The answer look right, but was there a story to these question?
If so can attach it so i can read make sure their right. I hope this helps!
"puso" would be the missing word.
La abuela no puso la leche ni el queso.
translation: The grandma didn't put the milk nor the cheese.
The picture isn’t loading what is it though
Answer for the first one: Cepillo mis dientes en la mañana.
Second one: Me peino con mi cepillo.
Third one : Decido si usaré una camisa roja o azúl.
Hope this helps .
Explanation:
I believe it is seria because una estudiante is feminine not masculine