this is a big dog.对big提问,用How
问题描述：
this is a big dog.对big提问,用How
答
how is this the dog?
答
How big is it ?
答
How is this dog?
答
How big is the dog？
这只狗有多大？
答
How is this a dog?
不明白的再问哟,请及时采纳,多谢 !