Listening 7. (No. 25~26)
https://www.youtube.com/watch?v=Rksc6ie2JIE&list=PL6D-YTosvGYq8YexsOG53BGav1CD0t3aM&index=20
Listening 8. (No. 27~28)
https://www.youtube.com/watch?v=MvXZvUyiNAE&list=PL6D-YTosvGYq8YexsOG53BGav1CD0t3aM&index=21