I'm amazed they had the cheek to ask in the first place.

　　我很吃驚，他們最初竟有臉問。

　　I still don't understand why you chose that name in the first place.

　　我仍不明白，你究竟為什么取了這么個名字。

　　The biggest question is how they got into this mess in the first place.

　　關鍵問題是他們究竟是怎么惹出這樣的麻煩的。