YOU SAID:
Hey! Are you up there, what are you doing here?
INTO JAPANESE
やあ！あそこにいるの？ここで何をしているの？
BACK INTO ENGLISH
"Hey! Are you over there? What are you doing here?"
INTO JAPANESE
「おい！あそこにいるのか？ここで何をしているんだ？」
BACK INTO ENGLISH
"Hey! Are you there? What are you doing here?"
INTO JAPANESE
「やあ！そこにいるの？ここで何をしているの？」
BACK INTO ENGLISH
"Hey! Are you there? What are you doing here?"
That didn't even make that much sense in English.
