to state formally in a court of law whether one is guilty or not (to enter a plea).

法廷で有罪か無罪かを申し立てる

to make an urgent or emotional appeal or request (to beg).

（必死に）頼む・懇願する

to argue or present reasons in support of something (to put forward as a defense or explanation).

（…を）主張する・（…を）理由に挙げる