例句與造句

1. How long have you stayed there
   你在那兒住多久了？
2. How long have you stayed there
   你在那兒住多久了？
3. How long have you stayed there
   你在那兒住多久了
4. It's difficult to find how long have you stayed there in a sentence. 用how long have you stayed there造句挺難的