the boy is singing 改特殊疑问句
问题描述：
the boy is singing 改特殊疑问句
答
What’s the boy doing？或 Who is singing。要说明针对哪一个单词提问。
答
首先，你写错了一个单词：brother。 改成特殊疑问句吗？ 那这样： Which boy is your brother？
答
what's the boy doing?
答
Who is singing?