问题描述：
The girl____(ride) a bike is his sister.怎么填写?为什么这样填写?
She is waiting for (her mother).对括号内的内容提问。怎样提问？
She is waiting for (her mother).对括号内的内容提问。怎样提问？
问题解答：
我来补答展开全文阅读