问题详情

Why couldn"t others detect Joey"s trouble with his feet when he was eight？
A．Because nobody paid attention to his walking.
B．Because he had received a good treatment already.
C．Because his father didn"t tell others.
D．Because he was old enough to control himself.此题为多项选择题。请帮忙给出正确答案和分析，谢谢！