The answer would be "sabes" it means "do you know" conoces mean also "do you know" but it refears if you know someone and sabes is if you know about something, "sabemos" means we know and "conosiste" means did you meet
Hope this helps
Words that end with an A are feminine, words ending in O are masculine
D. leyó.
since it is past tense
Yo sé. sabo isnt correct spanish, and sabe is not yo form.