Answer:
"cocinar" and "Yo"
Explanation:
"Cocinar" in English is "cook", right? and "Yo" is "I"
So, in my opinion, It should be those words.
I hope I can help you :,)
Um, whats the question exactly?
see below
Las
because when you say "las", you are saying that Mercedes y tu compraron faldas (you and Mercedes bought skirts