定语从句怎么写,
问题描述：
定语从句怎么写,
this is the reason.people are overweight（合并为定语从句）
this is the place.LU Xun once lived（变为定语从句）
this is the place______LU Xun once lived
she is a girl.She does well in English in our class
答
This is the reason why people are overweight.
where
She is the girl who does well in English in our class.