The girl began to learn the piano_＿the age of four.She is good_＿it now
问题描述：
The girl began to learn the piano_＿the age of four.She is good_＿it now
A.at,at
B.at,for
C.on,to
d.about,with
答
A
at the age of ...在...岁时
be good at...擅长...
句意：这个女孩在四岁时开始学习钢琴.她现在很擅长钢琴.