remin , exist, appear, disappear, seem, look, arrive, depart, go, come, proceed, occur, become, participate, take place, consist--> They don't have an object, so they can't be passive voice. be asked to / be expected to / be encouraged to / be invited to / be intended to / be required to /be pleased to / be permitted to / be allowed to / be required to / be adviced to / be scheduled to /be desig..