https://online2.tingclass.net/lesson/shi0529/0009/9801/40.mp3
https://image.tingclass.net/statics/js/2012
2 What can we learn from the dialogue?
[A] Mary was expected to come yesterday
[B] Mary didn't come because she was ill
[C] The man was Mary's father
[replyView] KeyA [/replyView]