对画线部分提问:my mother is forty.划线部分是forty.对画线部分提问:my mother is forty.划线部分是forty.is your mother?

问题描述:

对画线部分提问:my mother is forty.划线部分是forty.
对画线部分提问:my mother is forty.划线部分是forty.
is your mother?

how old