Answer:
Yo hablo.
Tú hablas.
Usted (él/ella) habla.
Explanation:
"Hablar" is a regular verb and it follows the pattern of similar verbs (ending in -ar, such as "amar" [amo, amas, ama].
You can obtain more info. at the Royal Spanish Academy (which is the official authoritative source for the Spanish language).
Native speaker over here. I hope this is helpful.
