Answer: No lo he (HECHO) todavía.
Juan y yo hemos (ESCRITO) una carta.
Explanation:
It's "hecho" because "hechido" is not a word.Neither is "hacerido" or "hacido".
It's "escrito" none of ther other options are actual words either.
Both hecho and escrito go against grammatical rules because they are part of the exceptions to verb rules.
A nation or region of the world
For the first set: If aliens have donuts with them, ask sweetly, not frantically
for the second set: Please consider I bake, I've never sewn things
idk... need any more... message me
1- sabia
2- saben
3- tienen
Hope it helps:)