Answer:
Cool math, has a lot of games or read a book or paint
Explanation:
The correct answer is cascada or salto de agua.
• El salto del ángel es la cascada más alta del mundo.
• El salto del ángel es el salto de agua más alto del mundo.
Part 1.
Number 1. Nosotros.
Number 2. Ellas.
Number 3. Ella.
Number 4. Tu.
You are using "SER" which is the to be. I have to go but I wish I can help with the second. Bye!