https://online2.tingclass.net/lesson/shi0529/0009/9215/u/7.mp3
https://image.tingclass.net/statics/js/2012
U-7:up to 從事于
A:Do you know what John has been up to since he left school?
A:你是否知道約翰離開(kāi)學(xué)校的近況?
B:I only know that he went to Japan two years ago.
B:我只知道他兩年前去了日本。