问题 补全对话,情景问答
补全对话。

LangLang: a famous pianist
Born: in 1982
Took piano lessons: in 1985
A:         1       that?
B: That's Langlang. He is a famous Chinese piarust.
A:        2        was he born?
B: In 1982.
A:        3        did he start to take piano lessons?
B: He started to play the piano when he was        4        years old.
A: Wow. He's cool.
答案

1. Who's  

2. When    

3. When    

4. three

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