Answer: I would probably say comer.
(Might be wrong though.)
Explanation:
This might be correct because comer is the only one that ends in -er.
im guessing you want this to be translated, so it translates to "
They arrive at the school at eight-fifteen" :)
Juan a viajado mucho.
Hope this will help
because conocer is used more when you personally know someone/thing
saber is used when you know facts about someone or something.
se is conjugated in the yo form
sabes is conjugated in the tu form so this one is correct because you are asking someone if they know where the party is.
The answer is stroll the streets