题目内容：

He started to learn the piano when he was five years old(改为同义句)

优质解答

He started to learn the piano at the age of five.
不明白的再问哟,请及时采纳,多谢!

追问：

I admire Yang Liwei because he is a talented space-man.（对because he is a talented space-man提问）

追答：

Why do you admire Yang Liwei ?