Audio: Units 7–12​

Unit 7
Track 24
Unit 8
Track 25
Track 26
Track 27
Unit 9
Track 28
Track 29
Progress Check 3
Track 30
Unit 10
Track 31
Track 32
Unit 11
Track 33
Track 34
Track 35
Track 36
Track 37
Unit 12
Track 38
Track 39
Progress Check 4
Track 40