（The girl in a green dress) is his sister.对括号部分进行提问,只填一个词,提示的是:_______is his hair?
问题描述：
（The girl in a green dress) is his sister.
对括号部分进行提问,只填一个词,提示的是:
_______is his hair?
答
which
答
Who is his sister?
答
Which