classes:  lecturer. You know, for us to study the sections and give lectures on our own, that's really helpful for us.  curriculum. You know, for us to study the sections and give lectures on our own, that's really helpful for us.  facility. You know, for us to study the sections and give lectures on our own, that's really helpful for us.  general. You know, for us to study the sections and give lectures on our own, that's really helpful for us.