Помогите пожалуйста! Most barristers are professional advocates earning their living by the presentation of civil and criminal cases in court. A barrister must be capable of prosecuting in a criminal case one day, and defending...

Помогите пожалуйста! Most barristers are professional advocates earning their living by the presentation of civil and criminal cases in court. A barrister must be capable of prosecuting in a criminal case one day, and defending an accused person the next, or of preparing the pleadings and taking the case for a plaintiff in a civil action one day, and doing the same for a defendant the next. Необходимо определить часть речи слов в суффиксом ing.