Cherry began to learn the piano when she was seven years old(改为同义句)快啊.

问题描述:

Cherry began to learn the piano when she was seven years old(改为同义句)
快啊.

Cherry has been learnning the piano since she was 7 .

at the age of seven

Cherry began to learn the piano at the age of seven

I started to learn the piano when I was five years old. =I started at the age of five