Key to Listening on page 65 - Intermediate level

3c.   1 Octave      2 Busking     3 high note, low note     4 musical instruments     5 notes      6 tune

3d.   2 He learned something but not enough

3e.    1 hour - optimistic (because he has everything he needs, and he has a plan)
         2 hours - unhappy (because playing the trumpet is difficult - he can't play for  very long before getting tired, and he can't play high notes
         5 hours - annoying (because the online teacher wears colourful shirts and is probably cheerful)
         9 hours - He's frustated by how little he can play (because he still can't play high notes, and he can't play any tunes he likes)
         14 hours - He's depressed and wants to give up (because he isn't improving)
         15 hours - badly (because he's doing everything wrong)
         17 hours - optimistic again (because he's improving and enjoying himself)
         20 hours - He thinks he'll be able to improve (because he says he'll keep practising)