Помогите с инфинитивом в английском

Перепишите данные предложения,
определите в них видо-

временные формы глагола и укажите их
инфинитив. 1.There
were two universities in England in the early 13th century – Oxford and Cambridge.
2.They usually buy newspapers in the
morning. 3.For a long time London University
had no library.4.The students will take an active
part in the preparation for the conference.5.My friend attends lectures,
classes and seminars at the University three times a week.