who are faster than the boys这句话对吗 Your bag is heavier than mine.对your提问 改为否定句 对划线部who are faster than the boys这句话对吗Your bag is heavier than mine.对your提问改为否定句对划线部分提问The boy with a small mouth is David.with a small mouth划线部分，对划线部分提问
问题描述：
who are faster than the boys这句话对吗 Your bag is heavier than mine.对your提问 改为否定句 对划线部
who are faster than the boys这句话对吗
Your bag is heavier than mine.对your提问
改为否定句
对划线部分提问
The boy with a small mouth is David.
with a small mouth划线部分，对划线部分提问
答