1.When does the old man always take a walk?
2.How many old books does Jason have?
3.1) A b 发 / b / 音,其它三个b 不发音.
2)D i 发/ i / 音.
1.When does the old man always take a walk?
2.How many old books does Jason have?
3.1) A b 发 / b / 音,其它三个b 不发音.
2)D i 发/ i / 音.