YOU SAID:
Why were you gone so early this morning?
INTO JAPANESE
今朝はなぜこんなに早く出かけたのですか?
BACK INTO ENGLISH
Why did you leave so early this morning?
INTO JAPANESE
今朝はなぜこんなに早く出発したのですか?
BACK INTO ENGLISH
Why did you leave so early this morning?
That didn't even make that much sense in English.