Read the following passage and mark the letter A, B, C, or D to indicate the correct option that completes each of the blanks.

The changes that took place in schools have changed the roles of teachers. In the past, teachers used to be the ___(1)___ source of knowledge, the leader and the educator of their students' school life. Nowadays, teachers provide information and show their students how to ___(2)___ with it. Although they are still considered to be a kind of leader in the class, they can be thought of as facilitators in the learning process. Another difference between the past and present tasks of teachers is represented by the technical background they need to be able to use and handle teaching aids effectively, such as computers, projectors, photocopiers, PowerPoint, etc. ___(3)___ teaching in chalk, they need to be an information technology expert.
One of ___(4)___ biggest challenges for teachers is that their role in school management has also changed. The school needs them as individuals who can make ___(5)___ and cope with the stress of the changing world of schools. At the same time, teachers need to be able to work in teams and cooperate with colleagues and parents. A teacher has not only to instruct but also to inspire the students with confidence and determination.