Part 3 I. 1. teenagers 2. covered 3. moving 4. system 5. disappeared 6. fluency 7. assistants 8. diploma II. 1. corrections 2. encouragement 3. enjoyment. 4. misunderstanding III. 1. be divided into 2. go to college 3. at the end of 4. made mistakes5. take part in6. at the start/ beginning ofiv.b.2.f3.a.d5.e6.c