She isn't so quiet as she _________.She's outgoing now.A.used to B.used to be 解释具体点.
问题描述：
She isn't so quiet as she _________.She's outgoing now.A.used to B.used to be 解释具体点.
答
use to的用法：used to do sth.表示“过去总做某事”（现在不做了）,只用于过去时态
She isn't so quiet as she used to be.
希望对你有用.