I think it's A.
pero. In English it's "but"
So
"I want to clean the kitchen but I do not have time."
Cundo el rio suena es una oración por lo tanto no necesita comas, puntos suspensivos o paréntesis
I'm not sure about 2 and 3, but the Aztecs built Tenochtitlan because they saw an eagle holding a snake on a pr(i)ckly pear cactus and thought it was a sign from the gods. They based the flag off of that.
I added the "i" in parentheses because Brainly found it a bad word?
